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84 Prelude 1.8L Dual Carb

Tiny
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  • 1984 HONDA PRELUDE
I just picked up an 84 Prelude from a friend for free, that has been sitting for 4-5 yrs. I'm in Dyer need of a work car so I would really like to get it running. My question: Is there anyway I can fix the compression without taking the motor apart? It has spark, gas getting to the carbs and still wont fire. I talked to the local Honda Shop and he said check the compression and it should be a minimum of 120 to run. I held a tester on each one and used a remote starter and the most I got was About 40 Psi. And the least was 5-10 Psi. With the throttle open and closed. Can you help me please.

Thanks T.L.
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Thursday, May 24th, 2007 AT 10:53 PM

4 Replies

Tiny
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It sounds like an engine rebuild is in order. You can try the timing chain/belt for the low compression won't hurt.

Redo the compression by using the wet and dry method.
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Thursday, May 24th, 2007 AT 11:27 PM
Tiny
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I'm unaware of the wet dry method. Could you explain it for me please. And also were you refering to replaceing the timing belt? Do you think that the timing could be off, thus causing open valves allowing low cylinder pressure? Thanks T.L.
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Friday, May 25th, 2007 AT 9:36 AM
Tiny
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I assumed you've taking the readings without oil-meaning the dry method-do wet compression by injecting 2tblspn of 30 weight in the cylinders -if the reading is much higher than the dry-its pointing towards the rings-still low its coming from the valvetrain.

A problem with the chain/belt could cause low readings in all cylinders-the valves could be open-Open it up and do some detective work.
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Friday, May 25th, 2007 AT 3:54 PM
Tiny
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Or you can do a cylinder leakage test- Low compressions and minimal leakage points to valve timing being off due to the belt being off a notch or two.
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Friday, May 25th, 2007 AT 4:36 PM

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