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-   -   loss of power (https://www.rx7club.com/general-rotary-tech-support-11/loss-power-532936/)

keiths82 04-23-06 03:38 PM

loss of power
 
I got my 82 rebuilt and my engine is acting up. My car starts to run rough and starts tolose pwer on uphill climbs and sometimes on the freewaY. It acts like it is misfiring a lil but i had a rotary place rebuild the motor so im curious what you guys mite thing it is. This is my first rx7 so i don't know much about it yet. Any help would be great. Thx

SPEEDRATED 04-24-06 02:02 AM

Did you rebuild the carb with that new motor?

SPEEDRATED 04-24-06 02:03 AM

Or a new fule filter?

keiths82 04-24-06 02:09 PM

Nope i shall look into those two things. Thx for the help will have a buddy help me look at um and see if that may be it.

SPEEDRATED 04-24-06 03:33 PM

Really sounds to me like it might be a fule filter. If you can"t blow thru it, it's pluged. If not that, check the float levil in the carb, front and rear. it should be 1/2 way up the glass. (make shure the car is on levil ground when you check this)
If all that stuff checks out, it might be the fule pump is wearing out. See if you can do a pressure test on it.
good luck!
Let me know what you find out!

SPEEDRATED 04-24-06 04:43 PM

Allmost forgot!!!
The fule inlet on the carb (big one of the 2) cas a screen filter in it!!!!

spot_skater 04-24-06 11:21 PM

Uphill climbs?

Do you still have a CAT? Substrate might have melted, causing plugged exhaust.

Hit it with a hammer, if it rattles, get a test pipe :)

SPEEDRATED 04-25-06 04:45 AM


Originally Posted by spot_skater
Uphill climbs?

Do you still have a CAT? Substrate might have melted, causing plugged exhaust.

Hit it with a hammer, if it rattles, get a test pipe :)

yep, could be that to!

keiths82 04-25-06 05:00 PM

thx guys ima check all of those ideas out. start with the fuel filter. and me andf my buddy thought some of it could be the exhaust being plugged. yesterday i ran her a lil and the exhaust starts to smoke wen i shut her down. and i was gonna get a staright pipe to repl;ace the catalitic wen i have a lil extra moneys

SPEEDRATED 04-26-06 01:16 AM


Originally Posted by keiths82
thx guys ima check all of those ideas out. start with the fuel filter. and me andf my buddy thought some of it could be the exhaust being plugged. yesterday i ran her a lil and the exhaust starts to smoke wen i shut her down. and i was gonna get a staright pipe to repl;ace the catalitic wen i have a lil extra moneys

DO NOT WAIT TO CHECK THE CAT!!!!!! IF IT IS THE CAT --IT WILL FRY YOUR MOTOR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!
Try breathing thru one of those little red coffie straws and go run around the block (no cheating!) You will pass out!!!! That is what is hapining to your motor, can you say melt down!!!

Tims 88 04-26-06 02:23 PM

Hey guys, I have an 88 nonturbo convertible. Just recently I am having power loss problems and it felt like maybe the exhaust was clogged up. I got that checked and everything came back ok but the problem they said was overfueling. How do I fix that?

SPEEDRATED 04-26-06 03:01 PM


Originally Posted by Tims 88
Hey guys, I have an 88 nonturbo convertible. Just recently I am having power loss problems and it felt like maybe the exhaust was clogged up. I got that checked and everything came back ok but the problem they said was overfueling. How do I fix that?

Wish i could help but EFI problems stump me to some times.:sad:
Overfueling? never heard that term before. Wonder if thats there way of saying, runing to rich?

nails 04-27-06 10:09 AM

Tims 88, please let me know what you find. I just stuck an '86 motor in an '88. Neither have been run in about 10 yrs, and I'm only on 2nd fill-up. Now I'm getting power loss uphill, but only when its warm out, freeway speed, and after running about 20 minutes. On the way TO work in the morning, everything is fine (it's an auto, so kinda puky anyway). Don't think its fuel cause it raps up in 2nd (but still little power). Starts & idles fine, no rough running, but throttle response is like I got a honkin' big trailer. Pulls uphill just fine the next morning. Gonna swap coils and take a closer look at plugs. Also thinking of a half-dead thermo sensor somewhere (gets warm and finishes dying?). Just got here in my web search.

Tims 88 04-27-06 12:28 PM

I called a Rotary tech over to look at the car he says it is most likely the primary injecters, cause above 4000 rpm it runs fine. He says I have to take the upper intake off and we are going to replace all of the injectors while we have it apart. By the way If anyone knows if $250 is a good deal for the work and parts I would love some feedback.

keiths82 04-27-06 07:07 PM

same with mine. we looked at the injectors and only one is spraying at low rpms and at high both spray but one is just dribbling a lil out and the other is running fine. i need a new jet or most likely gonna get a rebuild on my carb just to9 make sure nothing bad happens. and ima in the mid of taking teh exhaust apart and im going to pt in staight pipe no cat.

turek04 04-27-06 11:17 PM

I have an 89 and the same thing is happening loos of power, plus the car is backfiring a lot! I checked the compresion and It is low in the back rotor. I guess it is a apex seal?! Maybe somebody has any idea if it can be something else?

nails 05-04-06 02:25 PM

My problem is turning out to be some weird, intermittent brake-drag thing. But glad I don't have to pull the intake manifold, anyway.
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Nails


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