goeckeritz123

iTrader: (10)

hey guys long time since ive been on here. so the last couple weeks my car has been running really rough its been missing a bunch, i put new plugs, new oil. i run 91 octane. also feels like my power went out the window. kinda sounds like my timeing chain tensionor is bad but not sure if thats what it is. i bought a compression test tool. but wondering if anyone had any insight for me also it has 100k

mrbelvedere

iTrader: (3)

insight it could be lots of things do your test

CleverOne

iTrader: (1)

Clean TB, Clean MAF, Check plug gap, stock is .035 i think.

jp1600

iTrader: (2)

Dont forget sc coupler (ticking)

Tjolley

Its an engine by the way

goeckeritz123

iTrader: (10)

What kinda numvers should i see when i run the compression test.?

Tjolley

175-210

Some one correct me if im wrong.

Vander Nars

iTrader: (5)

It depends on if its a cold/warm dry/wet check and different gauges will have different readings, mainly u dont want more then 10 to 15% difference from the highest to lowest piston.

user 72239

iTrader: (4)

Also depends on elevation. GM says as long as its over 100 and each piston is within 10-15% of eachother its ok. others say thats wrong. I can never find a definite answer lol. but you really dont want anything under 100

Tjolley

Ill have to check my gm service manual Wen i get home.

A leak down test would be good also