Question about 1992 Toyota Land Cruiser

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My car has Loose compression problem what will i do to solve the problem

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Hi, if your engine is low on compression then this could be down to a couple of problems the first and most likely is that the head gasket is leaking gasses causing the loss of compression the only real other problem you could have is a bad valve. both of these problems would require the cylinder head to be removed so their is a lot of work involved ok

Posted on Feb 07, 2010

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First, start at the beginning... What were the codes. Also, was the new ECM programmed? Do you still have the old one? 2 things you can do before we talk. A compression test. 200+ pounds per cylinder. Next is remove the( pre catalytic converter) O2 sensor and see if your problem goes away(drive it). My guess right now would be catalytic converters. Compression and converters are the main things with power loose. I need codes to help you.

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Compression is what happens when the piston comes up and compresses the fuel/air mixture. Then the spark plug ignites it and the explosion drives the piston down in turn, turning the Crankshaft in turn making the car go. A compression leak is when this compressed fuel/air mixture is escaping from the combustion chamber.. This can happen 3 ways. 1. Bad piston rings, 2. Blown head gasket or cracked head or block, (usually caused by overheating), Or the least costly.. loose spark plugs.

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lose compression engine has worn piston rings and worn out valves.if you have high mileage engine.

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Not sure what loose compression is, but low compression would not be affected by changing the plugs unless the wrong plugs were installed.
The timing belt may have broken, but again that would not be caused by replacing the plugs. I would run a compression test to verify the problem.

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No compression


A car won't start without compression.
Request the compression numbers from him, if he hesitates he's probably trying to rip you off.

Randomly not starting could be a half dead fuel pump or just a loose connection under the hood causing sporadic spark to the plugs.

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The passenger rear side shock is knocking about. How do I change the shock if it is broken or has just come loose? Appears to be at the top under trunk


They're easy to change - just compress, remove, compress, install - unless they're coil - over - shock, then the spring needs to be compressed (DANGEROUS) and removed as well.
If it's just loose, try replacing the shock tower mounts.

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1997 silverado 5.7L I am going to replace the intake gasket because it is leaking. It is buring 1-1/2 quarts of oil or more between oil changes. I suspect a vavle job may be in order but have never done...


Bad valve's will not burn oil, bad valve will cause a cylinder miss fire, due to you will loose cylinder compression, I would replace the valve seal's, Also do a wet and dry compression test, do a dry test, and write down reading's, then add oil in cylinder, and do another compression test, if in any cylinder's compression jumps higher then dry test, that's where your loosing oil, weak piston ring's.

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A/c compressor has a loose donut ring on the end of unit


You cant tieghten it up ,it has to be replaced or removed,the ring is part of the compresser clutch ,if you eliminate your a/c,just get a serpentine belt the same year car as yours but without air,but im pretty sure all corvettes have a/c could be wrong but i have had eight vets myself actually i have 87 now but ,what will happen is the compresser itself will eventually seize then you have bigger problems have you priced a clutch for your compresser,i dont think there all that exspensive,you dont have to change whole compresser ,Hope this helps

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1 Answer

Air conditioning no longer works


it could be a loose compression compressor.

does the compressor sounds a little bit noisy? and increases as you rev the engine?

with the pressures that you gave, it seems that the compressor can not **** the gas from the lowside to transfer it to the high side. that is what we called loose compression.

i'm not sure if an oil charge could change the situation. it could be a mechanical problem already that can not be solve by adding oil to the system.

but i wonder why it would do that. it was just not used for 9 months.

good luck on the compressor, hope you can solve it by adding oil. if not, you have to replace the compressor.


tnx 4 using fixya,

drcool


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it sounds like a loose compression compressor.

if the compressor is loose compression, normally it sounds noisy. then suction pressure is above normal and if you accelerate and maintains that high speed, let say 2000 rpm, the suction pressure goes down to the normal level and cools your air conditioning .

tnx 4 using fixya...

drcool

Aug 29, 2008 | 2004 Nissan XTerra

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