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engine fires gets gas dosnt start
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raptercat92
New User
Aug 16, 2011, 12:19 PM
Post #1 of 2
(1203 views)
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engine fires gets gas dosnt start
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i have a 1988 z28 camaro w/ a 350 vortex in it 180k on car ide say about 50k on engine
the spark plug fire the car gets gas. its fuel injected. but it refuses to start. it turns over 1912501 times.. but wont start
it only does this after i drive it somewhere
anbd it starts up after about 1-3 hours.
the car has a huge loss in power also
anyone have a clue what my problem is?
i put a hole in the cat converter... so it cant be a clogged cat converter
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 16, 2011, 12:28 PM
Post #2 of 2
(1196 views)
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Re: engine fires gets gas dosnt start
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All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
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.
4) If all of these things check good, then you would need to do a complete compression test.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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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.
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