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Car will not start

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From the FSM on compression testing. Of course, you'll have to do it cold right now, but follow the rest.

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Note that the compression ratio will probably be lower with the engine cold, but there should not be a lot of variation in readings.

  • Author
2 minutes ago, Zed Head said:

Use something more flammable.  Starting fluid, carb cleaner, hydrocarbon brake cleaner.  Or gasoline.

And make sure it gets past the pistons in the carbs in to the runners.

will do. FYI though all fuel lines hooked up same as fuel pump and carbs....it should be getting gas...just check the little fuel filter up front and it has a little gas in it which had to have come from the fuel tank. Gas is fresh, only couple weeks old

  • Author
2 minutes ago, SteveJ said:

From the FSM on compression testing. Of course, you'll have to do it cold right now, but follow the rest.

image.png

Note that the compression ratio will probably be lower with the engine cold, but there should not be a lot of variation in readings.

thanks for that SteveJ. if i redo the compression test with all the plugs out at same time do you think i will get different results?

 

It is possible your readings will go up since the other cylinders won't be pushing as hard against the cylinder under test.

  • Author
34 minutes ago, Zed Head said:

 

You have reasonable cylinder pressures and the engine is spinning.  The engine should start.  So, spark is left as the unknown.  With the engine spinning that fast you should be able to get a nice stable ignition timing reading with a timing light.  If you can do that, it will tell a lot.

anyone can recommend a good timing light? dont have one and need to buy...all of em i see on amazon have bad top reviews.

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You might squirt some oil in the cylinders too.  Your low pressure numbers might be because the pistons aren't drawing in the air.

Could also be that your carbs aren't working right.  You don't know that the float bowls are full.

Starting fluid answers a lot of questions.  Big time saver.

14 minutes ago, Wally said:

anyone can recommend a good timing light? dont have one and need to buy...all of em i see on amazon have bad top reviews.

Timing lights are hit and miss anymore. The Innova Digital should do what you need for a timing light. https://www.amazon.com/dp/B000EVYGV4

 Along with pulling all the plugs, I open the throttle all the way during the test.

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