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Old 04-23-2012, 11:46 AM
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AMC Gremlin, 360 misses high RPM

Ok so I have general experience working on my rigs but their are some things I just don't know how to trouble shoot.

I have got my hands on a 73 Gremlin X that has a 360 thrown in under the hood. Has Msd ignition and distributor, carter afb carb, headers and intake. Never torn the engine apart and didn't built it so I'm just going to assume its stock internals.

The car sat for around 5 to 10 years before I got to reviving it, cleaned carb, figured out electrical issues ect.

Right now the engine runs pretty good except it won't rev up very high, the RPM guage quit working so I'm am guessing it won't rev up above 4 grand, starts to miss and loses power.

I'm on a budget and haven't even had the chance to replace spark plugs, or even look at them to be honest.
Sometimes my inline fuel filter is empty, and other times its full.

Ok questions: Is this likely causes by bad plugs?

Am I starveing for fuel when I get on it?

I don't have the book, and don't know too much about fine tuning timing, any one have a general guideline for how many degrees of timing this engine runs well at?

The engine does not smoke, but could valve lash be a problem?

I have adjusted my rev limiter all the way up with no change in top end preformance.
I have tweaked and adjusted timing and have got some improvments, but not what it should be. Could I possible have the wrong springs in the distributor?

Im going to pull a plug and check my gap, and should borrow a timing light to check that. Had to add a washer for the distributor hold down, wasn't getting tight and would move I discovered one day.

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Old 04-23-2012, 11:59 AM
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The MSD distributor gear is a known issue. it may have wiped the cam gear to the point it's going out of time
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Old 04-23-2012, 12:02 PM
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A car that has sat that long without being run can have a ton of varnish in the gas tank and fuel lines.My Ford had sat about 5 years and I had the tank boiled out and while it was out I sprayed the fuel line full of Berryman Chem-Tool and closed off the ends and let it soak 48 hours then I blew it out with the air compressor the nasty crap almost filled a small coffee can,I figured if it was that bad I just went and replaced the whole line.Also unleaded gas leaves a chalky deposit and when it evaporates you may have seen discussions about that here on other threads.
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