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Bad sound; 4 second startup

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Old Jul 20, 2009 | 04:39 AM
  #1  
Justin1989's Avatar
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Joined: Dec 2008
Posts: 96
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From: Oakley, California
Car: 1989 GTA
Engine: 5.7L TPI 350
Transmission: Automatic
Bad sound; 4 second startup

Hey everybody. Let me brief you on this car right quick.

About 3 months ago my fuel pump went bad so I put a new one in and it runs great. I also installed new MSD ignition wires. Two weeks ago I installed new spark plugs with factory gap. It ran great.

Yesterday I went to fill up at Chevron and they were filling up with a truck so I really think I got some bad gas because my teacher at college told me that the truck will really stir up all the bad sediment at the bottom of the gas tank and basically I probably just pumped some crap into my gas tank.. But here are my symptoms that just started occouring yesterday and today:

-Long cold starts (7-10 cranks)
-Stumbling at start
-Surging at stop lights in drive
-Whooping sound if revved at idle when cold

I don't know if any of you folks play video games, but the best way I can describe the noise the engine is making is.. It's similair to the noise a car in Grand Theft Auto 4 after you've really wrecked it up. It's like an exhaust leak or something. It accellerates with the motor. It's just a whooping sound. I really hope it's not too late for this motor because whooping sounds like this are usually bad news.

Let me know what you think it may be!
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Old Jul 20, 2009 | 05:19 AM
  #2  
1989IROC-Z5.7L's Avatar
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Joined: Dec 2008
Posts: 176
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From: North, Texas
Car: 1987 Buick WE4 Regal
Engine: 3.8L IC Turbo
Transmission: 200 4R Auto O/D
Axle/Gears: 3.42 posi
Re: Bad sound; 4 second startup

Sure you tightened all the plugs?
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Old Jul 20, 2009 | 01:08 PM
  #3  
EvilCartman's Avatar
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iTrader: (1)
 
Joined: Apr 2000
Posts: 5,321
Likes: 4
From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Re: Bad sound; 4 second startup

Check the fuel filter if you think a bunch of junk got stirred up and went into your tank.
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Old Jul 30, 2009 | 05:57 AM
  #4  
Justin1989's Avatar
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Junior Member
 
Joined: Dec 2008
Posts: 96
Likes: 0
From: Oakley, California
Car: 1989 GTA
Engine: 5.7L TPI 350
Transmission: Automatic
Re: Bad sound; 4 second startup

It was 4 bad fuel injector O-rings, caused major vaccum leaks.
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