So, I did a compression test to se what i got. I'll do a recap first; I'm struguling with an abnormal use of engine oil, I've replaced head gasket and valve stems w/new seals.
So the nubers: 150, 130, 145, 145, 170, 165 psi starting from 1 through 6.
so all is fairly low. I did pour a smal amut of engine oil in the nr 2 cylinder, and it jumped to 265 psi (witch is way to high).
So how bad are my numbers? And could it be bad pistons? I'm also wondering if it could be a cracked block?
Norwegian81
Just a sidenote; Before I put all the spark plugs back in I figured "why not put a tiny amount of oil in all the cylinders, it cant be harmfull since mazda says it's ok." well I did, I connected all the plugs and started the engine. The engine startet fine, and faster than it normaly does, then... I had my door open and a cool breze was blowing and alot of smoke filled the car. I went out of the car (stil running) and looked at my exhaust thick white smoke was comming out of it and filling my yard, it got less and less, but the smoke (visebility around 5m) was heading towards my neighbor who hopefully wassent sitting outside or having any windows open. In short, I have now found out what to do to realy piss somone off
Compression numbers, Are they bad, possibe bad pistons?
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Re: Compression numbers, Are they bad, possibe bad pistons?
You might feel really dumb....
But what engine are you running?
K8 DE ZE?
But what engine are you running?
K8 DE ZE?
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Black '93 BP RS - wrecked, parted, scrapped.
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Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
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Black '93 BP RS - wrecked, parted, scrapped.
Green GS - Sold.
Black GS - Summer DD/Race car - Fancy KLZE
Red GS - K8-ATX -> MTX-KLDE - Frakencar. Scrapped
White GS - Rusty. Parts. Scrapped
1997 BMW M3 - my summer baby
2002 BMW 325Xi - sold
2003 Forester Xti - EJ20K swapped.
Feedback
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Re: Compression numbers, Are they bad, possibe bad pistons?
why yes I feel quite dumb for forgeting that information
It's a K8 V6 24V DOHC.
More informatin you need that I left out?
Norwegian81
It's a K8 V6 24V DOHC.
More informatin you need that I left out?
Norwegian81
Re: Compression numbers, Are they bad, possibe bad pistons?
probably got a few bearings getting worn and some piston rings that are old
93 mx-3, hybrid de/ze-turbo P&P'd ZE heads,9.2:1 CR,garrett t3 57trim .60/.63,HKS SSQV bov, turbo xs 38mmW/G,24in downpipe,sts,13lbfw,sleeper FMIC,65mm TB,Walbro 255lph FP,F&R strut bars, ngk plugs/wires
p/s,a/c,cruise,vris delete..all go from here
p/s,a/c,cruise,vris delete..all go from here
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Re: Compression numbers, Are they bad, possibe bad pistons?
i think 130 is below service levels. sounds like worn rigs. ZE TIME or de will do to.
-hec
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!