TPI running too rich

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TPI running too rich

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Camaro Forums >> Camaro Models >> 3rd Generation >> V8 Tech >> TPI running too rich

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TPI running too rich - 3/21/2007 9:29:21 PM

Shmack2004

Posts: 78
Joined: 2/22/2007
Status: offline

My 85 Iroc-z is running rich as **** its a 305 TPI
it blows black smoke out the ass when i get on it.
any known causes or advice?

Post #: 1

RE: TPI running too rich - 3/21/2007 10:22:30 PM

microkid

Posts: 664
Joined: 10/6/2006
From: Gettysburg, PA
Status: offline

i had a similar problem, and it turned out to be a fuel pressure regulator. is it hard to start, black smoke comming out all the time, and really black when you rev it? also smells like raw gas too when you shut the engine off? if its just a little black smoke when you rev it, thats just a little rich, and can be fixed by a tune up (plugs, wires, cap, rotor, air filters, cleaning MAF, etc.), but if its a lot of smoke like i described, its the fuel pressure regulator. its about a 3-4 hour job, and the hardest thing is removing the throttle cable bracket. the throttle body and upper runner must be removed to get to the regulator. my rebuild kit cost $80, but you can buy an aftermarket, adj. one for about $60. to actually rebuild it took me 3 minutes to do. you will need a tamper resistant torx bit, either t-10 or t-15.

_____________________________

1986 Camaro Z28. Soon to have a mild 350 hp 350 with TPI. Trying to keep it looking factory. Can you say sleeper?

(in reply to Shmack2004)

Post #: 2

RE: TPI running too rich - 3/21/2007 10:30:38 PM

Shmack2004

Posts: 78
Joined: 2/22/2007
Status: offline

sounds like my problem, thanks, i'll get me a regulator soon.
did you ever get a smell like burning gun powder...i get that from time to time.
definately smell the gas. after starting it sometimes runs like **** so i have to hold my foot on the gas till it runs right or it will stall out.

< Message edited by Shmack2004 -- 3/21/2007 10:31:18 PM >

(in reply to microkid)

Post #: 3

RE: TPI running too rich - 3/23/2007 5:50:34 PM

microkid

Posts: 664
Joined: 10/6/2006
From: Gettysburg, PA
Status: offline

yep, thats the problem i had. i sometimes get the sulphur smell in the mornings, but thats about the only time.

_____________________________

1986 Camaro Z28. Soon to have a mild 350 hp 350 with TPI. Trying to keep it looking factory. Can you say sleeper?

(in reply to Shmack2004)

Post #: 4

RE: TPI running too rich - 3/31/2007 10:57:49 PM

Shmack2004

Posts: 78
Joined: 2/22/2007
Status: offline

i replaced the regulator....now it runs worse than ever...if at all...it makes a popping sound and as soon as i let of the gas it dies.

(in reply to microkid)

Post #: 5

RE: TPI running too rich - 4/1/2007 9:59:16 AM

microkid

Posts: 664
Joined: 10/6/2006
From: Gettysburg, PA
Status: offline

well that sucks. have you recently replaced the ignition system (cap, rotor, plugs, wires). check your timing to see if thats the problem. is it still coughing out the black smoke? it might also be something with injectors, one may be broken, or there could be a problem with the computer controls for them. are you getting the service engine light at all?

_____________________________

1986 Camaro Z28. Soon to have a mild 350 hp 350 with TPI. Trying to keep it looking factory. Can you say sleeper?

(in reply to Shmack2004)

Post #: 6

RE: TPI running too rich - 4/1/2007 12:14:53 PM

Shmack2004

Posts: 78
Joined: 2/22/2007
Status: offline

well i started it up this morning and it ran like **** for like a minute but then ran fine...now it runs like for i little bit (for 1 to 5 minutes) **** when i first start it up then runs fine. sometimes it will run fine as soon as i start it but it doent happen to often.

no black smoke...the regulator seemed to solve that. :)

< Message edited by Shmack2004 -- 4/1/2007 12:16:23 PM >

(in reply to microkid)

Post #: 7

RE: TPI running too rich - 4/2/2007 7:38:54 PM

microkid

Posts: 664
Joined: 10/6/2006
From: Gettysburg, PA
Status: offline

describe to me what running like **** means. i know i have an issue for cold starts, i need to use eather below 30*. otherwise, it starts fine. its got a rough idle for about a minute or two, then smoothes out. it also doesnt have any throttle response until its been warmed up

_____________________________

1986 Camaro Z28. Soon to have a mild 350 hp 350 with TPI. Trying to keep it looking factory. Can you say sleeper?

(in reply to Shmack2004)

Post #: 8

RE: TPI running too rich - 4/3/2007 9:00:31 AM

uradumass5695

Posts: 76
Joined: 10/20/2006
Status: offline

Also, check youe egr valve, its underneath the upper plenum in the center of the intake manifold. When you pull it off see if it is full of sh*t, and if so clean it out with throttle body and carb cleaner. I had that problem once before. I didnt have the popping noise, but the black smoke and stallling i had.

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Post #: 9

RE: TPI running too rich - 4/3/2007 6:18:39 PM

Shmack2004

Posts: 78
Joined: 2/22/2007
Status: offline

quote:

ORIGINAL: microkid

describe to me what running like **** means. i know i have an issue for cold starts, i need to use eather below 30*. otherwise, it starts fine. its got a rough idle for about a minute or two, then smoothes out. it also doesnt have any throttle response until its been warmed up

sounds like mine

(in reply to microkid)

Post #: 10