Bad fuel pump? - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 08-10-2011, 10:29 PM Thread Starter
 
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Bad fuel pump?

I have a 67 GTO that has had limited use for the past 6 or 7 years. Recently I have began taking the time to go through it. The last few times I drove it I had the hot start problem. Last week I tried to start it but It would not start. The engine turns over when the key is turned but it does not start. I know a little about basic engine repair but I am not a machanic.
Anyone have any suggestions?
Thanks in advance, Brian
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post #2 of 2 (permalink) Old 08-10-2011, 11:26 PM
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Step by step - an engine needs 3 things to start and run: air, fuel, spark. Test for presence of each one until you figure out what's missing.

Spark: pull a spark plug wire but leave the end close to the plug or some other metal part of the engine. Try to start it, watch and listen for spark jumping. Get someone to help if you need to. No spark? Could be points, bad coil, bad plug wire (try several different ones), bad coil wire, no power getting to the coil (test for voltage present on the primary side using a meter, with ignition on). If you get spark this way but still no joy, remove a few spark plugs and look at them. If they're obviously dirty and very wet, could be too fouled to fire - give them a good cleaning with a wire brush, re-gap, re-install and try again.

Fuel: Remove air cleaner, lean over and look down the carb as you slowly open the throttle by hand. You should be able to see fuel squirting when you do. No squirt? Could be out of gas, clogged in-line fuel filter, bad fuel pump, clogged fuel line. Try pouring a thimble-full or two of fuel down the carb throat then try to start it (careful! stand back) - could be the fuel bowl is empty and the pump just needs a little "help" to get going again.

Air: try with air cleaner removed - make sure choke isn't stuck shut.

You'll get there.

Bear

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