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Need Help About Spark Plugs, And Running Poorly.. Please Read.

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Old Sep 1, 2002 | 09:12 PM
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From: Wichita Falls Tx
Need Help About Spark Plugs, And Running Poorly.. Please Read.

ok, heres the story.

today i drove about 15 miles away to a friends house. when i got there i turned my car off. went and got here and tried to start my car and all it did was crank. i removed a few plugs to find out they're all fouled (very dry and white) so i guess i'm running lean.

i find somebody near her that has a set of used plugs from his 350 that are in much better shape than mine so he gave those to me. i managed to install 5 of them. then it was a B***h to start my car. but after i finally got it running, if i gave it more than 1/4 throttle it'd bog out and die. so i managed to get home (stopping at o'reileys to get new plugs first) i bought 8 AC delcos and installed 7 of them tonight (broke one) (gonna go to wal mart llater to get one) my car starts right up now. but it still bogs down whenever i give it more than 1/4 - 1/3 throttle. and if i dont llet go of the pedal it'll backfire.
after i put my 7 plugs in i took it for about a 2 mile spin, then iwhen i got back i pulled the #1 plug and it looked as if it'd been running lean. both of my injectors are spraying just fine (TBI) and i can hear my fuel pump running.

the car revs just ine in park or neutral, no bogging at any rpm nomatter how i push the pedal (push fast, slow, relese fast, or slow.)

what could be the cause of this???

BTW (i'm gonna post on the general eninge and TBI boards because i need an answer tonight. this is my only car and i have to be at work tomorrow morning.)
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Old Sep 1, 2002 | 10:18 PM
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
hows the fuel pressure? That would be the next thing id check if the plugs are white or the insulation has a melted look to it.
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Old Sep 1, 2002 | 11:59 PM
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From: Wichita Falls Tx
i was thinking that, do i have to buy a guage to put on the fuel line to check that?

also i had somebody tell me tonight that it is most defidently the coil. is this possabel?
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Old Sep 2, 2002 | 12:26 AM
  #4  
ZZ28ZZ's Avatar
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From: Austin
Car: 82 Z-28
Engine: 383 TPI
Transmission: 700R4
Replaced the fuel filter lately?
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Old Sep 2, 2002 | 06:39 AM
  #5  
ede's Avatar
ede
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From: Jackson County
besides replacing plugs have you tried trouble shooting it? got spark to all 8 right? no codes? whats the fuel preasure and volumn? did you check the cat?
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Old Sep 2, 2002 | 08:29 AM
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From: Wichita Falls Tx
didn't get any codes. i don't have any cat. i didn't check for a spark on all 8. also the dist. & cap. were replaced a couple months ago.
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Old Sep 2, 2002 | 08:30 AM
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From: Wichita Falls Tx
and how do i check the fuel pressure? do i have to get a gauge to put on the fuel line?

and once i get a guage (if thats what i need) what is the correct PSI for it?

Last edited by Ratstix; Sep 2, 2002 at 08:35 AM.
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Old Sep 2, 2002 | 11:57 AM
  #8  
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
just plumb the gaige into the larger of the two fuel lines (3/8 in one i beleive) in the engine bay. I saw someone who installed the gauge in the rubber line that connects up to the hard lines that run up to the tb. Im thinking of doing the same myself. The normal pressure ramge is 9-13 psi.
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Old Sep 2, 2002 | 12:10 PM
  #9  
ede's Avatar
ede
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From: Jackson County
auto zone has a gauge for tbi trouble shooting for around 40 dollars
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Old Sep 2, 2002 | 08:46 PM
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From: Wichita Falls Tx
k. this is bad. went to autozone tonight. they tested my coil and said it was fine.

car fires up fine now that i got the plugs in. but whenever i give it gas (when in gear) it will try to die.
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Old Sep 2, 2002 | 09:10 PM
  #11  
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From: Los Angeles, CA
Engine: LH0 3.1L
Originally posted by ZZ28ZZ
Replaced the fuel filter lately?
Rastix,
This is one of the best suggestions....yet you seem to have ignored it.........

Pull the filter off, clean the INLET side and try to blow through it with your mouth. There should be little resistance.
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Old Sep 2, 2002 | 10:12 PM
  #12  
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From: Wichita Falls Tx
k, i will do that tomorrow. as a matter of fact i'll just replace the filter.

i also am going to check my timing, perhaps thats off.


i forgot to mention in the first post that before i drove to the friends house that was 15 miles away i was just above E and i put 7 gallons in. so i'm hoping that it's just the gas.

the knock in my cylinders seems to be getting worse.
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Old Sep 2, 2002 | 10:35 PM
  #13  
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From: Wichita Falls Tx
ok, now whenever i try to start the car it wont start and it backfires as i'm cranking it. when i had it running earlier somebody said it smelled rich.
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