Hello. I was wondering i know how to do a compression test basic up to the this point only, its just When it says to block open the throttle, does it matter how much the throttle is open ? what should i use to allow enough air to come in? as far as blocking the throttle?... also could i just have a friend step on the gas to the floor each time? so that the same amount of air is going in?... also should i crack it once and see my compression then do it 3 more times ( total of 4 crank ) and go from their for each one? also after each crack should i reset the psi back to 0 out of the 4 cranks? .. this is done on a 2gnt 99... thanks Michael 99gs

1. pull the fuel pump relay
2. remove all 4 sparkpulgs
3. insert compression tester in cylinder 1
4. floor it.
5. crank it. Have a friend watch until it doesn't climb any more. After that, yer done.
6. repeat for each cylinder.

If one is 15-20PSI lower than the ones next to it, put in a teaspoon of clean motor oil. Redo. If the compression increases by 15-20PSI, it's rings. If not, it's something else.

Good luck!

_____________________________________________
-Dino Yancey
I'm so bad, i should be in detention.


For Mitsubishi Technical Manuals, INCLUDING the 97-99 electrical and service manuals, ckick HERE:
http://www.heavenz-not-0verflowing.com/files/

so i floor it then crack it 4 times? i heard you crank it 4 time then you got a accurate reading ?
So hows your car doing bro? Michael 99gs

well i just did the compression test with my cousin we got:
#1-200
#2-190
#3-205
#4-200
Pretty good,now im unsure about going turbo... as far as spending alot of money for it i have enough money for a stage two kit just need some advice to make me go turbo... Michael 99gs

#2 piston looks a little low compared to the others


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It's a little low, but certainly within spec. if it is +/-20%, then it should be worried about.. Your numbers look good, man. I'd slap a turbo on that.

_____________________________________________
-Dino Yancey
I'm so bad, i should be in detention.


For Mitsubishi Technical Manuals, INCLUDING the 97-99 electrical and service manuals, ckick HERE:
http://www.heavenz-not-0verflowing.com/files/

i wanna slap a turbo on it i feel powerless since my gst, but i dont want to spend alot of money... mostly doing internal work later you know... still thinking if i should save it for school but i want power hehe ... Michael 99gs