Running Rich

[DFG 5OH]

Well i figure my car's running rich, i small gas all the time, and its strong, its in a good tune, but gets bad gas milage, my exhaust pops a lot on deceleration right after i start it, i figure thats raw fuel igniting...so if my car is running rich, how can i tell, and what can i do to fix it???

 

[DFG 5OH]

well maybe its the o2's...how would i know? If i take it to a shop, could they run diag. on my computer and stuff?

 

[slytherin]

I'm in the same boat from what everybody is saying on my dynotune thread that seems to be the way to correct or get a tweecer and try to correct it yourself.

 

[broken_joke]

i have a similar issue. i'll probably go to autozone and rent a diagnostic tool to see if anything pops up. it's a obd1 and obd2 scanner. maybe you should try this cause you'll get your deposit back and it won't cost anything after your done.

 

[DFG 5OH]

I'd like to take my car and get a leakdown/compression test, and get diagnostics ran on the computer, check injectors, A/F...stuff like that...make sure everything is in good shape.

How much would this cost, and could this fix my running rich problem?

 

[DFG 5OH]

come on you guys...

 

[rude_life]

Same here buddy..i was in the Weinersnitchel drive-thru today and i could smell the fuel strong as heck. Also lately it just seems to run crappier and crappier.

 

[slytherin]

I'm trying to get the car checked out for free at the local vocational school they have a pretty good mechanics class with all the newest diagnostic gizmos + 3 certified master mechanics/teachers who check all the work done. I'll see what they come up with if/when they let me bring the cobra in.

 

[DFG 5OH]

maybe i'll throw in some new O2's and see if that helps, if not, i'll get deeper into it.

 

[slytherin]

See I've been told it's because I dont have cat's to scrub the exhaust. which I dont believe because even if I had cats there's no way they could get rid of that much rich smell.

 

[Don 95Vert]

First off, a really lean engine will smell too and it kinda smells like a rich engine. Unless your nose has a built-in wide band, you can't really tell for sure. No way to tell without wideband data what the engine is doing, unless raw gas is dripping out the exhaust.

Find somewhere you can take it with a wideband 02 senor to gather data to see what's happening. Run codes on the motor too. Make sure you have no vacuum leaks or airleaks in the intake piping.

 

[slytherin]

Well I had the cobra checked out last night with a scanner(wether thats good enough?) It threw no codes all systems checked out, the instructor said he had a 5.0 with out cats and it smelled exactly the same "so get used to it". My cam is the other part of the equation he said" Idling is not what it's designed for" and I got another "so get used to it" or "swap it".

 

[DFG 5OH]

well i have an off road pipe...maybe i'm jsut being paranoid, me and a buddy are going to do a compression test sometime, and if that turns out ok, i'll stop worrying, and start modding