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-   -   running but running to rich, wants to die when i give gas??? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/running-but-running-rich-wants-die-when-i-give-gas-653689/)

MazdalicousRx7 05-18-07 03:41 PM

running but running to rich, wants to die when i give gas???
 
im confused anyone know what it could be doing. i just got it to stay idling, and now everytime i give it alittle gas it hestates then feels as if it has 3 horsepower. i just don't get it. anyone know what the problem could be?

i has brand new fuel lines, new fuel filter and fuel pump, nothing is being pinched.

is idling at 1300rpms and i don't know whats wrong. any ideas or thought?

-scott

-Six- 05-18-07 03:54 PM

Vacuum leak maybe? Why is it idling so high first of all? Is the air bypass valve out of whack? Since all the fuel components seem to be new, assuming the fuel is being delivered properly, maybe the air is not being delivered properly. When you replaced those lines, did you also replace intake manifold gaskets, or re-use old ones? That could be causing some air/vacuum leaks as well.

Also, you can't always assume that new parts are perfect, I would confirm your fuel is being delivered as expected, then start looking at other things (fuel, and spark).

Edit - How do you know if you are running rich or not?

MazdalicousRx7 05-18-07 05:52 PM

you can smell the exuast fumes

VacavilleFC 05-18-07 06:07 PM

yea i agree with -six-, possibly a vacuum leak, could be a bad ground, could be a blown motor, could be bad injectors, lots of other possibilities too. sounds like you need to go get dirty and spend sometime under the hood :P

classicauto 05-18-07 06:11 PM

What year/model?

1988fcchaoticnarkotic 05-18-07 06:14 PM

Yea probably vaccum leak, aslo check mass air sensor. Sometimes when they go bad it idles horribly.

-Six- 05-19-07 11:59 AM


Originally Posted by MazdalicousRx7 (Post 6954881)
you can smell the exuast fumes

I wouldn't go by that alone, it's just not a reliable indicator, rotaries leave alot of unburned fuel by nature.

I would check that bypass air valve, and look for vacuum leaks. Let us know what happens.

fcunderwater 05-19-07 01:16 PM


Originally Posted by VacavilleFC (Post 6954923)
yea i agree with -six-, possibly a vacuum leak, could be a bad ground, could be a blown motor, could be bad injectors, lots of other possibilities too. sounds like you need to go get dirty and spend sometime under the hood :P

I agree. High Idle and a rich mixture are symptoms of A LOT of problems and the only way to figure it out is if there are more clues to solve this puzzle. But then again vacuum leak is the most likely...

RoTa7 05-19-07 04:59 PM


Originally Posted by MazdalicousRx7 (Post 6954881)
you can smell the exuast fumes


i can smell exhaust fumes even tho my car is running right. that just how the motor works. no exhaust fumes in the cabin of course

HKSpoweredFC3S 05-19-07 11:01 PM

Most likly somthing electrical.

RotaMan99 05-20-07 06:58 AM

Mke sure your throttle sensor is not shorting out. This is probubly not the cause though. I would check your AFM. Look in the Factory Service Manual for procedure.

MazdalicousRx7 05-25-07 02:41 AM

i found out what it is, rear rotor housing has NO compression i guess you just can't trust people when buying a motor. its sucks ass. now i have to let it sit longer till i can save up more money...


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