Boost leak and im about to give up and sell her.
05-31-09, 12:30 AM
#1
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Boost leak and im about to give up and sell her.
OK so i live in this gay *** lil town in CA and nobody does anything with tuners/imports around here professionally. so im stuck with myself and the internet to solve my problems. so ive been searching the forums and cant find any solution. i cant find this damn boost leak. and you can hear it. its like a loud whistle when i rev at 4500 and release the gas. im really frustrated and dont want to sell my favorite car so if you can please help.
things ive done/symptoms
checked my hoses where the turbo manifold is and replaced the only cracked hose i could find (which didnt fix it)
tightened/replace some of the clamps that needed it.
i now have the upper intake manifold off looking at that mess of hoses. i noticed the hose off the orange electrical plug is not connected to anything and i cant see where it would go.
it sounded like it was coming from where the intake manifold is. and when i was driving is sound like a tire going flat when you accelerate.
when i do drive the car only gets about 5psi on the boost gauge.
any help would be appreciated. i do not wanna sell my car. please help me.
things ive done/symptoms
checked my hoses where the turbo manifold is and replaced the only cracked hose i could find (which didnt fix it)
tightened/replace some of the clamps that needed it.
i now have the upper intake manifold off looking at that mess of hoses. i noticed the hose off the orange electrical plug is not connected to anything and i cant see where it would go.
it sounded like it was coming from where the intake manifold is. and when i was driving is sound like a tire going flat when you accelerate.
when i do drive the car only gets about 5psi on the boost gauge.
any help would be appreciated. i do not wanna sell my car. please help me.
05-31-09, 02:22 AM
#2
Wankel Wankel!
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Sorry to hear about your problems, life is gonna be tough with an fd with nobody around to help... i know how it is. The forums are your friend though, and there a lot of info on here that will help you.
First off these are all things that are posted on the forum... this should help you with your mystery wire maybe.
And as far as that vacuum line you will just need to look at this pic and look at every line where ever you think the sound is coming from. It is probably so dump little line that came off or a nipple that came off on the manifold some where.
Let us know how it goes, and Lodi isnt all that bad... so cheer up lol.
First off these are all things that are posted on the forum... this should help you with your mystery wire maybe.
And as far as that vacuum line you will just need to look at this pic and look at every line where ever you think the sound is coming from. It is probably so dump little line that came off or a nipple that came off on the manifold some where.
Let us know how it goes, and Lodi isnt all that bad... so cheer up lol.
05-31-09, 02:26 AM
#3
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You might look into the boost leak tester from Garage Fighters. That might help.
http://www.fighters-garage.com/rx7.html
http://www.fighters-garage.com/rx7.html
05-31-09, 02:31 AM
#4
u should just to a simplified sequential and redo the lines with silicone lines. you will have 4 solenoids and minimal vac lines. Or find a shop that has a smoke machine, feed the smoke in ur uim where ur brake booster line goes, and u will pinpoint all ur vac leaks with ease.
I was going nuts these past months with a vac/boost leak problem and just didnt think of putting smoke through it just yesterday and found a fat leak on the grommets for my primary rail.
I was going nuts these past months with a vac/boost leak problem and just didnt think of putting smoke through it just yesterday and found a fat leak on the grommets for my primary rail.
05-31-09, 04:31 AM
#5
u should just to a simplified sequential and redo the lines with silicone lines. you will have 4 solenoids and minimal vac lines. Or find a shop that has a smoke machine, feed the smoke in ur uim where ur brake booster line goes, and u will pinpoint all ur vac leaks with ease.
I was going nuts these past months with a vac/boost leak problem and just didnt think of putting smoke through it just yesterday and found a fat leak on the grommets for my primary rail.
I was going nuts these past months with a vac/boost leak problem and just didnt think of putting smoke through it just yesterday and found a fat leak on the grommets for my primary rail.
05-31-09, 06:12 AM
#6
A boost leak will probably exist just the same with a nonsequential setup. Do you get above 5psi at any point in the RPM range?
Here is a list of things that can leak out boost through the whole RPM range:
- Any coupler between the y-pipe and intercooler, intercooler and throttle elbow
- The gaskets between the throttle elbow, throttle body, and UIM
- The hose to the CRV
- The hose to the ABV
Here is a list of things that can leak out boost through the whole RPM range:
- Any coupler between the y-pipe and intercooler, intercooler and throttle elbow
- The gaskets between the throttle elbow, throttle body, and UIM
- The hose to the CRV
- The hose to the ABV
05-31-09, 08:33 AM
#7
Constant threat
A boost leak will probably exist just the same with a nonsequential setup. Do you get above 5psi at any point in the RPM range?
Here is a list of things that can leak out boost through the whole RPM range:
- Any coupler between the y-pipe and intercooler, intercooler and throttle elbow
- The gaskets between the throttle elbow, throttle body, and UIM
- The hose to the CRV
- The hose to the ABV
Here is a list of things that can leak out boost through the whole RPM range:
- Any coupler between the y-pipe and intercooler, intercooler and throttle elbow
- The gaskets between the throttle elbow, throttle body, and UIM
- The hose to the CRV
- The hose to the ABV
Boost 'leaks' are ONLY caused by a few things like this.
Other boost 'problems' can be caused by the solenoids of the rat's nest and/or the vacuum lines.
If you can hear boost escaping, it should be a simple problem to fix.
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05-31-09, 01:34 PM
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wow a lot of help guys thank you so much! im going to try to find the leak with all this info. and how do you check if its a solenoid thats bad in the rats nest? because maybe thats it. and you can hear boost escaping.
also nowhere around here sells silicone tubing. we have a pepboys, autozone, kragen, and two smaller shops in the area. but once you tell them what you need the part for they just say no with a quickness and say i cant help ya because its an import. hence why im so upset with this problem. the hose i replaced cost me $88 dollars from mazda. so where can i get silicone hose at for a reasonable price?
and again thank you guys for all your help. im gonna get started right now.
oh and i almost forgot. in reply to adam c. i would love to take it to ricks rotary but he is a hour and a half away from me as are the other rotary shops. and i do not wannna drive it over there as is and cause more problems. and also work is VERY slow right now and i really dont have the cash to get it seen by a professional mechanic. and dont have the money for the tow bill.
as far as local shops no1 has experience with rotarys. when i first got the car i took it to a local shop and the guy said i needed to replace some piston rings cuz the 4th cylinder was losing compression lol so needless to say i got the hell outta there
also nowhere around here sells silicone tubing. we have a pepboys, autozone, kragen, and two smaller shops in the area. but once you tell them what you need the part for they just say no with a quickness and say i cant help ya because its an import. hence why im so upset with this problem. the hose i replaced cost me $88 dollars from mazda. so where can i get silicone hose at for a reasonable price?
and again thank you guys for all your help. im gonna get started right now.
oh and i almost forgot. in reply to adam c. i would love to take it to ricks rotary but he is a hour and a half away from me as are the other rotary shops. and i do not wannna drive it over there as is and cause more problems. and also work is VERY slow right now and i really dont have the cash to get it seen by a professional mechanic. and dont have the money for the tow bill.
as far as local shops no1 has experience with rotarys. when i first got the car i took it to a local shop and the guy said i needed to replace some piston rings cuz the 4th cylinder was losing compression lol so needless to say i got the hell outta there
05-31-09, 01:52 PM
#11
Here is a website... http://www.hosetechniques.com/ they have a 3rd gen specific kit... If I had more time I would shoot up there and help you out but as is I have 3 cars on my plate already...
Chris
Chris
05-31-09, 02:33 PM
#12
hey febrezee69 i was just about to give up my self and go non sequential because i just couldn't find the boost leak. Today i just came back from an rx7 meet and i decided to just look around the engine bay and with my mityvac "thank you dgeesaman" i started to pressurize the pressure tanks and wallah the lower pressure tank thats under the alternator was not holding pressure.I removed the tank and submersed it in water and it started to bubble. haaaa i found the leak...and i am talking about 1 years worth of struggling with this god damn boost issue. don't give up man.
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
05-31-09, 03:30 PM
#14
Wankel Wankel!
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Some of the Kragens Ive gone to sell colored silicone hose, I would double check if you werent sure... maybe save up some cash for a beater in the future would be good.
06-01-09, 02:31 AM
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06-01-09, 02:32 AM
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Here is a website... http://www.hosetechniques.com/ they have a 3rd gen specific kit... If I had more time I would shoot up there and help you out but as is I have 3 cars on my plate already...
Chris
Chris
06-01-09, 02:36 AM
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hey febrezee69 i was just about to give up my self and go non sequential because i just couldn't find the boost leak. Today i just came back from an rx7 meet and i decided to just look around the engine bay and with my mityvac "thank you dgeesaman" i started to pressurize the pressure tanks and wallah the lower pressure tank thats under the alternator was not holding pressure.I removed the tank and submersed it in water and it started to bubble. haaaa i found the leak...and i am talking about 1 years worth of struggling with this god damn boost issue. don't give up man.
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
06-01-09, 02:37 AM
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so this may sound and probably is a stupid question but does that mean i can rule out certain parts of the engine??? and if so where?
06-01-09, 02:39 AM
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i asked and they look at me like im stupid and like they never heard of silicone hoses and lines before. which knowing the people around here they probably havent.
06-01-09, 08:48 AM
#20
Racecar - Formula 2000
... and wallah the lower pressure tank thats under the alternator was not holding pressure.I removed the tank and submersed it in water and it started to bubble. haaaa i found the leak...and i am talking about 1 years worth of struggling with this god damn boost issue. don't give up man.
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
come to find out some how the p/s a/c belt was rubbing on the tank and it made a small hole
That's the vacuum chamber, which is more important to boost function than the pressure chamber. W/O the vacuum chamber almost nothing will work properly. W/O the pressure chamber (in front of the UIM), the onset of secondary boost will be erratic or non-existant, but most other things will be OK.
Dave
06-01-09, 11:50 AM
#22
I think you should fix the leak and then sell your FD.
Lodi is only 60 miles from Rick Rotary which in my book that's rather near. I drive 40 miles each way just to go to work, and that's nothing compared to some people I work with. My mechanic is 150 miles from my house and I see him all the time. Yeah I get ******* tired of it but damn I love my car.
Im not being a dick but it takes a whole lot of love (and $) to own one of these cars. A boost leak is basically one of the most minimal problems these cars have, and if that is trying your patience then you are in for a world of hurt. Especially if you aren't willing to drive nor tow your car to a rotary mechanic. Which is fine because these cars are a true pain in the ***. Honestly it shouldn't be like that, but it is what it is.
Lodi is only 60 miles from Rick Rotary which in my book that's rather near. I drive 40 miles each way just to go to work, and that's nothing compared to some people I work with. My mechanic is 150 miles from my house and I see him all the time. Yeah I get ******* tired of it but damn I love my car.
Im not being a dick but it takes a whole lot of love (and $) to own one of these cars. A boost leak is basically one of the most minimal problems these cars have, and if that is trying your patience then you are in for a world of hurt. Especially if you aren't willing to drive nor tow your car to a rotary mechanic. Which is fine because these cars are a true pain in the ***. Honestly it shouldn't be like that, but it is what it is.
Last edited by Montego; 06-01-09 at 11:54 AM.
06-01-09, 12:54 PM
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^ yeah 60miles, thats not bad. I live in montreal and there is no rotary shop at all in the whole province!! All we got is friend from our lil rotary club.
For your leak, every time i see/hear about whine sound/leak, its always y-pipe coupler or IC coupler, even if you think you've checked it, its there. I once add a y-pipe coupler that had a inch crack on it: invisible without squizing the coupler.
I suggest you to start with those coupler, remove it to inspect it.
For your leak, every time i see/hear about whine sound/leak, its always y-pipe coupler or IC coupler, even if you think you've checked it, its there. I once add a y-pipe coupler that had a inch crack on it: invisible without squizing the coupler.
I suggest you to start with those coupler, remove it to inspect it.
Last edited by JDMinard; 06-01-09 at 12:58 PM.
06-01-09, 02:34 PM
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I think you should fix the leak and then sell your FD.
Lodi is only 60 miles from Rick Rotary which in my book that's rather near. I drive 40 miles each way just to go to work, and that's nothing compared to some people I work with. My mechanic is 150 miles from my house and I see him all the time. Yeah I get ******* tired of it but damn I love my car.
Im not being a dick but it takes a whole lot of love (and $) to own one of these cars. A boost leak is basically one of the most minimal problems these cars have, and if that is trying your patience then you are in for a world of hurt. Especially if you aren't willing to drive nor tow your car to a rotary mechanic. Which is fine because these cars are a true pain in the ***. Honestly it shouldn't be like that, but it is what it is.
Lodi is only 60 miles from Rick Rotary which in my book that's rather near. I drive 40 miles each way just to go to work, and that's nothing compared to some people I work with. My mechanic is 150 miles from my house and I see him all the time. Yeah I get ******* tired of it but damn I love my car.
Im not being a dick but it takes a whole lot of love (and $) to own one of these cars. A boost leak is basically one of the most minimal problems these cars have, and if that is trying your patience then you are in for a world of hurt. Especially if you aren't willing to drive nor tow your car to a rotary mechanic. Which is fine because these cars are a true pain in the ***. Honestly it shouldn't be like that, but it is what it is.
