95 Cheveroet Caprice dies - Engine Troubleshooting


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95 Cheveroet Caprice dies

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

raveloa
New User

Mar 11, 2013, 11:34 AM

Post #1 of 4 (1340 views)

95 Cheveroet Caprice dies	Sign In

I have a 95 Chevy Caprice it starts up fine but when it on for about 20 minutes it dies it is getting fuel and fire i even tried starting fluid and it wont start it has a 4.3 V8 it has opti spark ignition

Tom Greenleaf
Ultimate Carjunky / Moderator
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Mar 11, 2013, 12:11 PM

Post #2 of 4 (1319 views)

Re: 95 Cheveroet Caprice dies	Sign In

You may want to check the spark w a spark tester (not expensive) that shows how far it can jump.

Next and possible is valve timing via timing chain is off time (jumped) and if so you'll find it both may crank too easily and very low compression as the clue, especially if this was a surprise to an otherwise well running engine,

T

Hammer Time
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Mar 11, 2013, 1:25 PM

Post #3 of 4 (1311 views)

Re: 95 Cheveroet Caprice dies	Sign In

It can't be getting both or it would be running.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Tom Greenleaf
Ultimate Carjunky / Moderator
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Mar 11, 2013, 2:02 PM

Post #4 of 4 (1305 views)

Re: 95 Cheveroet Caprice dies	Sign In

Flooded out plugs will fire without compression but self ground with compression on some. Rare but has happened several time to me so it can show everything right and not run if so. Said rare and we don't know if it's flooded that bad,

T

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