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Old 11-26-2006, 02:10 PM
Zib Zib is offline
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'98 Chevy 350 pickup is hard to start.

Hey guys,

My buddy's '98 Chevy Z71 has been giving him problems starting. On cold starts the motor will continue to turn over but not fire up. He has resorted to using some starting fluild to get it going. Once it's been running a while it starts up fine & runs fine in the city or highway.

He replaced the plugs, wires, rotor & distributor cap because they were due to be changed anyway but that didn't do much to help.

Any ideas as to what the problem might be?

Thanks for any help.
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Old 11-26-2006, 02:42 PM
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Maybe a bad coolant temperature sensor telling the computer that the engine is warm and it's not going into open loop to provide an enrichened condition to get the engine started. I guess the first question is, is the check engine light on, are there any stored engine codes.
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Old 11-26-2006, 03:57 PM
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Fuel pump is shot. If you need starting fluid and it runs fine on highway, it's the fuel pump. It may work, but theres not enough pressure there to start the engine.
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Last edited by justen; 11-26-2006 at 03:58 PM.
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Old 11-26-2006, 10:57 PM
JimChevy JimChevy is offline
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You probably know more about that than me, but if the fuel pump was starting to go wouldn't it spit and sputter going down the road, and probably not idle.
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Old 11-26-2006, 11:01 PM
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No it will run absolutely fine with a hot engine. But one day you pull into somewhere shut the engine off. You'll come back to start it. And it will run for maybe 15 seconds and die. Thats the end of that fuel pump. I just replaced mine maybe 2 or 3 months ago. I was using a cap of gas to get it started cold.

Since the new fuel pump it turns over maybe a turn and it's running already. Cold or hot out. My old pump was pushing 57 psi, and my new pump pushes 64 psi.
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Last edited by justen; 11-26-2006 at 11:05 PM.
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Old 11-26-2006, 11:11 PM
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Come to think of it, if you don't have one, it's helpful to have a fuel pressure gauge. That will tell you if it's a weak fuel pump or not.
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Old 11-30-2006, 09:40 AM
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Thanks guys,

My buddy is taking it to get checked out this weekend. The mechanic told him over the phone that it sounds like a bad fuel pump but he should have it diagnosed first because the pump costs over $300.
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Old 11-30-2006, 03:38 PM
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actually no the fuel pump runs from $78 -$167. What the real cost is, is labor. For our gm dealership you would be looking at atleast $550.00 Thats labor and a new ac delco fuel pump. But one thing you really get out of the deal, is warranty. If you're truck would break down with-in so much time, and it's because of the fuel pump, Then it would get fixed for free. But if they find Ethanal in your gas tank, that can be wavered.
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Last edited by justen; 11-30-2006 at 07:51 PM.
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Old 11-30-2006, 04:03 PM
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That happened to me once (98 Safari V6, work truck). It started fine in the morning never had any problems previously. That very day I drove about 300miles, non stop. Pulled inot a parking lot, went for a meeting, came out and nothing. At the time I did not listen for the shrill sound of the pump. They towed it to the garage and a new fuel pump. I was back in business $1000.00 CDN Mostly labor
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