Fir Misfires on start up - Honda-Tech


Fir Misfires on start up

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Old 10-10-2016, 09:55 AM   #1
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Default Fir Misfires on start up

This Fit has us going nuts, it has new spark plugs and packs, the car misfires only on start up once it is warm, the vehicle runs fine with no issues..Did a compression test I am thinking its to low but its showing 115 across the board....Not sure what is normal compression on a fit with 164k...We almost fed up and ready to drop a pull a part engine in it but, it would be nice to find the issue with this car. Never had a fit stump us like this b4...any ideas before we just write the engine off?
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Old 10-11-2016, 11:34 PM   #2
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Default Re: Fir Misfires on start up

Adjust the valve clearances now.
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Old 10-27-2016, 07:58 PM   #3
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Default Re: Fir Misfires on start up

you should always do a dry and wet compression test to see if cylinders have compression. The wet test you take out the spark plugs and squirt oil in it.but before doing this do a dry test and record your numbers. after do a wet test, if results are a major difference between wet and dry you know that you have a bad compression or most likely bad piston rings.
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