Fresh rebulid but plugs keep fouling
#3
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OK I'm new to this and this is my 1st FD so ill try to keep this simple cuz this b*^%h is
pissing me off. i got a full swap from jdm depot and it was leaking coolant in to oil pan.
everything was replaced in the rebuild exp rotor bearings, and turbos and it was street ported (not sure if its a large or mild port)
car has stock ecu with a full 3inch exhaust (hks down pipe custom mid pipe and hks cat back), apexi intakes & front mount, ast, fluidyne rad and a walbro 255 thats about it.
i was told that i had to break motor in before turbos can be connected ( there spooling up nice)
now the prob is 1 when under no load the car will only rev to 5grand tops.
is that normal?
2 Ive driven about 250 and changed the plugs 3 times so far its only been a week
3 under loads slow creeping up the rev i can only get to 4 maybe 45
now i maybe being impatient but is this normal during the breaking in stage
and i do realize i have no idea how long the the motor was sitting before i bought it.
but i am about to just sell this ungrateful itch and go back to my Honda lol
PS i did comp test it not sure if i did it right i just did what Mitchel on demand told me
i removed the trailing plugs disconnected the fuel pump jumped the starter and i got a 100 in both rotor housings .
pissing me off. i got a full swap from jdm depot and it was leaking coolant in to oil pan.
everything was replaced in the rebuild exp rotor bearings, and turbos and it was street ported (not sure if its a large or mild port)
car has stock ecu with a full 3inch exhaust (hks down pipe custom mid pipe and hks cat back), apexi intakes & front mount, ast, fluidyne rad and a walbro 255 thats about it.
i was told that i had to break motor in before turbos can be connected ( there spooling up nice)
now the prob is 1 when under no load the car will only rev to 5grand tops.
is that normal?
2 Ive driven about 250 and changed the plugs 3 times so far its only been a week
3 under loads slow creeping up the rev i can only get to 4 maybe 45
now i maybe being impatient but is this normal during the breaking in stage
and i do realize i have no idea how long the the motor was sitting before i bought it.
but i am about to just sell this ungrateful itch and go back to my Honda lol
PS i did comp test it not sure if i did it right i just did what Mitchel on demand told me
i removed the trailing plugs disconnected the fuel pump jumped the starter and i got a 100 in both rotor housings .
#4
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Sounds like you have a leaky injector(s).
Thats why i couldnt buy an engine (and def not a rotary engine) from jdmdepot. I spoke to those guys at the track before and they have zero knowledge on whats going on.
That or they like to play dumb to play it safe from the consumers.
Thats why i couldnt buy an engine (and def not a rotary engine) from jdmdepot. I spoke to those guys at the track before and they have zero knowledge on whats going on.
That or they like to play dumb to play it safe from the consumers.
#7
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the guys who rebuild the motor for me really knows there stuff i picked them because Ive seen there work on few cars i wouldn't doubt them for a sec, but i run a shop and i dont like not knowing about my car.
the car has been getting better the more i drive it but its seems wrong for me to have to change the plugs so often. well like i said I'm new to this game and i plan to work on my own motor this summer.
for the leaky injector how can i test that and can the problem be that because the boost is not hooked up and the ecu is dumping fuel for boost would this kill the plugs.
and for me still having the stock ecu I'm getting a aem comp and tunning right after tax time cuz funds are at zero and my girl would kill if she even knew how much i already dumped in this car.
the car has been getting better the more i drive it but its seems wrong for me to have to change the plugs so often. well like i said I'm new to this game and i plan to work on my own motor this summer.
for the leaky injector how can i test that and can the problem be that because the boost is not hooked up and the ecu is dumping fuel for boost would this kill the plugs.
and for me still having the stock ecu I'm getting a aem comp and tunning right after tax time cuz funds are at zero and my girl would kill if she even knew how much i already dumped in this car.
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#13
Sounds like injector leak to me
Have you tried running the fuel pump w/o the car running like how you would prime the fuel system? Gas should not get past the seals on prime only fill up fuel circuit. Need Power FC in my opinion w/a tune for your mods. The car should start right up on the first try after a rebuild. High idle would be normal in my opinion but thats it. The engine will talk to ya if you listen. I agree it will seem to run better & better till its as good as its gonna get but shouldnt need plugs all the time. You need to see if gas is gettin past the seals. You have to really break down and play mechanic sometimes w/your problem. You may need to completely lift the fuel rails and operate the fuel system manually just so you can see w/your own eyes. Fire Extinguisher here and safety x3. Never hurts to have a second set of eyes & hands around for this, safer.
Oh yeah, whats not connected on the turbos? Everything need to be connected correctly. Just keep out of the boost thats all. Check your oil before every time you start it. Check your coolant too. Is the car smoking from gas? If you do have leaky injector ('s) keep in mind it can strand you on the road by completely floodin out your plugs. I think you need to make sure gas isnt gettin past injector seals and then go from there.
Make sure everything is hooked up, everything.
Good luck.
Oh yeah, whats not connected on the turbos? Everything need to be connected correctly. Just keep out of the boost thats all. Check your oil before every time you start it. Check your coolant too. Is the car smoking from gas? If you do have leaky injector ('s) keep in mind it can strand you on the road by completely floodin out your plugs. I think you need to make sure gas isnt gettin past injector seals and then go from there.
Make sure everything is hooked up, everything.
Good luck.
Last edited by KD-93R1; 01-16-11 at 07:28 PM. Reason: Add
#14
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yes its taco he is great but i hate being one of those customers.... so i figured id post the prob and see what info i get its never bad to get more info
the car did start up first try and the turbos are connected i don't know how to say it but they don't send pressure back to the motor? thats what i mean by not connected hes going to connect them as soon as i hit that 1000 mile mark then i get to boost (basically hes making sure i don't go and kill the motor before i break it in.
i would have a comp but i only had planed to buy a shell do a swap and have fun till i had the funds to build motor and single it one shot but jdm depot killed that dream so till i have the 2500 for comp and tune i will be using the stock ecu and stock boost levels
the car did start up first try and the turbos are connected i don't know how to say it but they don't send pressure back to the motor? thats what i mean by not connected hes going to connect them as soon as i hit that 1000 mile mark then i get to boost (basically hes making sure i don't go and kill the motor before i break it in.
i would have a comp but i only had planed to buy a shell do a swap and have fun till i had the funds to build motor and single it one shot but jdm depot killed that dream so till i have the 2500 for comp and tune i will be using the stock ecu and stock boost levels
#16
Rotary Enthusiast
Im pretty sure running the stock ECU with your intercooler pipes not hooked up cant be too good for fouling?
It would make the car run like crap, and a crap running rotarys foul plugs..
Id hook the intercooler/turbos back up but stay out of boost.
It would make the car run like crap, and a crap running rotarys foul plugs..
Id hook the intercooler/turbos back up but stay out of boost.
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the guys who rebuild the motor for me really knows there stuff i picked them because Ive seen there work on few cars i wouldn't doubt them for a sec, but i run a shop and i dont like not knowing about my car.
the car has been getting better the more i drive it but its seems wrong for me to have to change the plugs so often. well like i said I'm new to this game and i plan to work on my own motor this summer.
for the leaky injector how can i test that and can the problem be that because the boost is not hooked up and the ecu is dumping fuel for boost would this kill the plugs.
and for me still having the stock ecu I'm getting a aem comp and tunning right after tax time cuz funds are at zero and my girl would kill if she even knew how much i already dumped in this car.
the car has been getting better the more i drive it but its seems wrong for me to have to change the plugs so often. well like i said I'm new to this game and i plan to work on my own motor this summer.
for the leaky injector how can i test that and can the problem be that because the boost is not hooked up and the ecu is dumping fuel for boost would this kill the plugs.
and for me still having the stock ecu I'm getting a aem comp and tunning right after tax time cuz funds are at zero and my girl would kill if she even knew how much i already dumped in this car.
Last edited by IRPerformance; 01-17-11 at 07:47 PM.
#20
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I may be wrong...but on a stock ecu.. and without the turbo's connected... your car is probly running disgustingly rich. I guess they didn't want you to boost the motor until it was properly broken in which is smart if you have no self control. But the ecu is set up for boost...therefore it won't compensate for the lack of positive pressure. My guess is your plugs are fouling out because your way to rich. Are you seeing any white smoke? Also what kind of plugs are you using? And check your oil level...
#21
Rotary Enthusiast
^ i agree with the above, you have too many mods for a stock 8bit ECU, not safe at all.
But I firmly believe the reason your fouling plugs is your turbos/intercooler not hooked up.
You say the turbos are hooked up but not sending air into the motor. That means your turbos are bolted in, so they will spool but are not hooked up to the engine intake after that point.
I cant believe you are wondering why its fouling plugs with a HUGE *** AIR LEAK.
Anyone with a turbo vehicle should be able to tell you what happenes when your intercooler
pipe comes off / isnt hooked up. Go google it even lol...
Infact im surprised no one else here has told you that it will make your car run like crap and foul up, especially with the stock ECU!.
But I firmly believe the reason your fouling plugs is your turbos/intercooler not hooked up.
You say the turbos are hooked up but not sending air into the motor. That means your turbos are bolted in, so they will spool but are not hooked up to the engine intake after that point.
I cant believe you are wondering why its fouling plugs with a HUGE *** AIR LEAK.
Anyone with a turbo vehicle should be able to tell you what happenes when your intercooler
pipe comes off / isnt hooked up. Go google it even lol...
Infact im surprised no one else here has told you that it will make your car run like crap and foul up, especially with the stock ECU!.
#22
Rotary Enthusiast
I may be wrong...but on a stock ecu.. and without the turbo's connected... your car is probly running disgustingly rich. I guess they didn't want you to boost the motor until it was properly broken in which is smart if you have no self control. But the ecu is set up for boost...therefore it won't compensate for the lack of positive pressure. My guess is your plugs are fouling out because your way to rich. Are you seeing any white smoke? Also what kind of plugs are you using? And check your oil level...
YUESSSS!! someone with some sense!
#24
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If they guys who worked on your car really knew what they were doing, they would have never let it leave with all those modifications and a stock ecu. Your first problem lies in that. Second, running with no intercooler piping is surely to overspin your turbos and will shortly ruin them. Please for your own sake bring the car to a reputable shop or park it until you get in a better financial situation to fix it correctly.
the car needs a ecu because of the mods? even thou i dont plan to up boost
and they do now what there doing ive seen there work on other cars (rx-7)
im realy jus posting the prob to see what others think so i can understand the car better
and in your opinon driving the car the way it is now would futher damage the car ?
#25
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ilmao my thoughts to a tee i grew up around supras and im a honda man my self
but she was such a good looking girl with strong sex apeal lol but sadly not even a tugg job from this gold digger but i started im a finish as for the ecu i real thought i cud drive it till wat next month
but she was such a good looking girl with strong sex apeal lol but sadly not even a tugg job from this gold digger but i started im a finish as for the ecu i real thought i cud drive it till wat next month