compression test

[TO82]

Same way mate... just plug a batery to the starter and crank it manually at WOT.The reading should be a litle lower due to the lower operating temperature but you can have a clue.

Ok thanks for that do you have any idea of compression figures for a cold engine? and rep added

 

[350ep70gr]

You can have a clue for some things tho...cause a friend of mine buy an engine and comp test was spot on but the crankshaft was F***ed.
chris

 

[350ep70gr]

Ok thanks for that do you have any idea of compression figures for a cold engine? and rep added

Thanks!
Just guessing that an 150 figure will be spot on on a cold and standard and midle millage engine. Maybe someone who had made a cold comp test could help more tho.
And keep in mind that maybe your lower comp engine if forged and inside are ross HRC s lol. What a mis.

 

[EP824U]

what do u mean b wide open throttle? foot down on the accelerator? sorry if im bein dumb lol

 

[MentaLEP91]

what do u mean b wide open throttle? foot down on the accelerator? sorry if im bein dumb lol

wide open throttlebody mate. in a few words, yes, tap it

 

[350ep70gr]

what do u mean b wide open throttle? foot down on the accelerator? sorry if im bein dumb lol

Yeap and test at operating temp are also critical!!

 

[javieringo1]

so you just take one spark plug out, test it, then the second one (do you put the first one back in?)

 

[nexia201]

so you just take one spark plug out, test it, then the second one (do you put the first one back in?)

yes you do