dont understang compression
#1
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dont understang compression
so i recently purchased a 1994 4 runner sr5 V6 5seep 4x4. ( besides the r-22 i heard this was the next best to buy) and the person told me that it had a minor exhaust leak. i drove it home ( 52 miles up and down hills in california) and started to check it out. i have replaced the exhaust gasket on the drivers side hoping that would fix it... but no... so i went on to check out the exhaust so i removed the entire exhaust from the cat back, had it checked... and it was all good... now the 4runner runs, ive offroaded it, but it lacks power. i know what a blown HG sounds like, thats how my 91 4runner died.
now i did a tune up, thinking it was spark plugs ect... and nothing ( only a minor improvement. )
so the next step was the clutch slipping, but my brother suggested to check the compression cuz it was making a sound ( a low pop sound ) so cylinders 1 - 4 have 150 psi compression... cylinders 5 & 6 have around 30 psi... so now im lost... how can cylinders 1-4 have good compression and 5 & 6 have no compression at all???
BTW... i took off the valve cover to make sure the cam wasnt broken ( had happend to me on a 88 celica) and its good...
so any ideas... would help... if you need me to discribe anything... let me know.. and ill do the best.
now i did a tune up, thinking it was spark plugs ect... and nothing ( only a minor improvement. )
so the next step was the clutch slipping, but my brother suggested to check the compression cuz it was making a sound ( a low pop sound ) so cylinders 1 - 4 have 150 psi compression... cylinders 5 & 6 have around 30 psi... so now im lost... how can cylinders 1-4 have good compression and 5 & 6 have no compression at all???
BTW... i took off the valve cover to make sure the cam wasnt broken ( had happend to me on a 88 celica) and its good...
so any ideas... would help... if you need me to discribe anything... let me know.. and ill do the best.
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could be blown headgaskets, could be mis adjusted valves. a leak-down test could point the finger at the culprit but if you can't do it, I might start with the valve adjustments considering the comment about 'popping' and lack of power.
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lol... your right 22-r i was typing fast and didnt notice.... and now its r-134... FYI.... hehehehe and im open to all suggestions... so i have a bag of options to do as i go, and i want the take the engine apart solution as last one.. lol... i dont wana take it apart if i dont need to
lol
and thanks for the correction!
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well like I said, you can check the valve adjustments on 5 & 6 and at least rule that out.
after that, a leak down test is going to be the best option for finding the problem without tearing the engine apart.
after that, a leak down test is going to be the best option for finding the problem without tearing the engine apart.
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thanks alot bro!!! i see your in salinas... if i get the 4runner fixed.. ill take ya out to lunch as thanks lol.
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Abe won't eat lunch with you...because he eats little kids on a regular basis
I had cracked rings on my #3 cylinder and I had a popping sound. You could also try squirting some oil into the cylinder and then do the compression test again!
I had cracked rings on my #3 cylinder and I had a popping sound. You could also try squirting some oil into the cylinder and then do the compression test again!
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lol... well i i have a trip up to san fran this week... lol... but i live in corona. lol... i used to live out there in lake elsinore.... mmm i lived of right there by the ford dealers. lol... FYI... if you meet a girl named karen, at the carwash right there next to the am/pm... walk away... lol... she might give you aids.. or some odd thing... lol!!!
so much for staying on topic lol
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I grew up in So Cal, I stopped and got gas 1 time in the 909, saw a midget with a mullet pumping gas into her wusstang....er.....rustang, and scared the hell outta me. After that, I avoided the 909 and all of Inland Empire like the plague.
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hahahah omg that is soo funny... and i dont doubt it... i have seen some funny crap here... lol... but i still love it. besides... im 3 months here 3 in miami so right when i miss it... its time to go back... and right when i miss miami... its time to go back... so, it plays out perfect!