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Got My Compression Tetsed

WogsRus

By WogsRus,
in Engines & Forced Induction

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WogsRus Veteran

WogsRus

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Did a compresion Test this afternoon, on a COLD engine. I know it is suppose to be warm but couldn't do it then.

So i got

Cylinder 1 = 150 psi

Cylinder 2 = 152 psi

Cylinder 3 = 153 psi

Cylinder 4 = 151 psi

Cylinder 5 = 150 psi

Cylinder 6 = 150 psi

This was on a cold, well possibly sligtly, slightly warm engine. SO looking good.

Also got some shots inside each cylinder boore (photos), all look spot on, no leaning out spots, all the same. Plugs looked all the same, but cylinder one, propably a bit ritcher then any other.

So all good, new ecu seams ok. Adjusted the timing to 18 degress and will see what happens. All plugs are now 0.75mm and no missfire. YEEHHHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.

Gone try and get a hold of a leak down tester and see what's what. But happy so far. Engine has done 80K and has had a bit of a hard life the past 10K or so with me behind the wheel.

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https://www.sau.com.au/forums/topic/153261-got-my-compression-tetsed/
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WogsRus Veteran

WogsRus

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One thing, i read this on another forum, does it actually matter.

"""""Yep as the others said, variance is definitely more important because the absolute readings of every gauge are different. I would try disabling the injectors as I found they deflated the readings by upto 10psi. So pull the fuse to the ECU or disconnect each injector if its accessible! Oh and, dont forget to have all 6 sparkies out when you do it, and also have the throttle wide open"""""""

I had the injectors pullsing still.

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