I am having issues with running rich. I have an 86 gxl n/a cat back exhust, short stack with a k&n cone fillter. new injectors (stock) new pd, new o2 sensor went to shop no codes came up. all adjustments on mixtures were done yet we are still running 7x the fuel we should be. still race at local track and dont get beat. changed the tps with a used one made some change but did not fix it. hard to start and wont without giving some gas, and then it gives a small cloud of smoke (unburnt fuel?) then clears up after a very short time always smells of fuel. we also have a mysteries tick. any ideas would help me out this has been going on to long. please help

 

Love the thread title.

I regretfully can offer no help, hopefully someone else can.

 

How do you know it's rich?


-Ted

 

you can smell the fuel very strong so after making all the changes that I could and nothing made a change I took it to the shop for final adjustments.when I took it to the shop for all the adjustments no codes came up and the mechanic told me we were running 7x the fuel we should be

 

Fuel smell out the tailpipe?
Do you have the stock cats intact?
Have you passed an emissions test recently?

Or is it fuel smell from the engine bay???


-Ted

 

we have had the car for two months and have not done emissions test yet but at the shop they said it would not pass. the smell is at the tailpipes

 

Timing? You probably have already checked this but the timing will make it run rich and be very hard to start. My timing was off and it wouldn't start without giving it gas, set the timing dead on and bam, it would start like a dream.

 

the timing was checked at the shop and we had it dead on problem still there

 

Stumped. Whats the fuel pressure set at?

 

Im stumped to I dont know what it is set at so ill find a tester today and check it out

 

try swapping out your ecu with a similar one. Un hook the battery before doing so.

 

is there a way of testing the one ive got or do i just need to spend the money to get another one like i said im broke for another two weeks and i mean BROKE. this car has over $700 in the last 3 weeks just trying to fix it

 

i understand man.

 

went back to the shop the co is running 7 when it should be 1

 

Are the cats original?
Did you confirm visually they are not clogged or falling apart?

I dunno if the '86s come with the idle mixture screw, but you might want to mess with that if you have one.

I assume the air pump and all emissions are in good, working order, especially ACV and EGR valves?


-Ted

 

Leeky injectors maybe? It's very unlikely but you never know.

 

brandnew injectors,no leaks cats in good shape, only 1 and a half years old. how do you test acv and egr valves

 

Is your new O2 sensor wiring shielded?

First thing I would do is probe that sucker from the ECU while driving (at cruise) to see what kind of voltages it's putting out...

 

It probably wouldn't be the egr vavle. That not working usually only causes high amounts of NOX gasses, just like bad catalytic converters. I'll try to find somthing on the ACV for you.

 

I'll tell you what. Get the FSM at iluvmyrx7.com
I went to type the whole procedure but it would take too long. Let me know if you need me to do it for you anyways.

 

http://www.iluvmyrx7.com/

 

well Ive not been able to find a fuel pressure tester but when I do what is it need to be? and a big thanks to all who gave ideas but I need more, the problem is still there and its getting close to payday so i need to get this figured out before i spend $ on the wrong thing thanks for the help.

 

fpr ?? could be stuck open or something and is using more fuel then you should .. thats what i would check

 

Holy hell...Talk about a thread of random guessing.

First things first...Do a full 60K tuneup. Replace belts, hoses, fluids, spark plugs, wires. Set the TPS.

Now, test the air temp sensor and water temp sensor (at the water pump) per the factory manual.

Since you have a cone filter, make SURE the AFM is oriented in the factory position (black cover up). If the flapper door is hanging down, the car will run rich. If it is pointing up, the car will run lean.

Do NOT adjust anything until you are sure that all the sensors are operating correctly.

 

Do as Aaron sez...

and then do some more random guessing - like did someone send you the wrong friggin' size of new injectors?