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How much compression psi in the cylinders should a 1986 Chevrolet 305 motor have?
Wiki User
∙ 13y ago
155-160 good used 170-175new
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∙ 13y ago
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What is compression on the cylinders of 2001 Holden rodeo diesel 2.8lt?
The compression on the cylinders of a 2001 Holden Rodeo diesel 2.8lt is not stated. It is stated that the 2001 Holden Rodeo diesel 2.8lt has a high compression g200z motor.
If you lost engine compression do you need to replace the motor and where can you buy a good running motor in the Detroit area?
loosing compression does not mean you have to get a new motor it can just mean u have a blown head gasket if its an old carIf compression is lost on only a few cylinders, then check the head gaskets. If compression is lost on all cylinders, check for a worn or broken timing chain.
What is the average compression ratio for a 2004 225 hp mercury marine motor?
depending on hours 120lbs------165lbs there should not be more than a 5lb difference between cylinders
What causes a rebuilt motor not to start?
Check the valve timing and the ignition timing. If both are good then check the compression in all the cylinders.
You were just given a 1960 hydro swift with a 1960 80 hp mercury outboard you checked motor and noticed no plugs were in cylinders will that damage motor sitting 5 years you were told motor ran?
Motor should be fine as long as no water got into the cylinders
Why is gasoline in your motor oil?
More than likely the engine is missing on one or more cylinders and unburnt fuel is being forced past the piston rings on the compression stroke.
Is the head bad if there is no compression or is it the oil pump that operates the lifters on a 1988 323?
No compression on all cylinders would indicate a broken cam belt. i think this motor has hydralic lifter, but for them to cause no compression it would be unlikly. when you say no do you mean none at all or low compression? a broken cam belt could be the cause if all cylinders have no compression. if the cylinders are down it could be bad valve seats (the point of contact between the valve and the head). if it is one or two cylinders it could be cracked head or cracked/broken head gasket. the only other possablilities are broken rings or broken piston. you need to know compression reading of all cylinders in a dry and wet situation. to do this 1:take the compesssion of a cylinder 2:then remove compression guage and squirt two good squirts of engine oil in the cylinder through the plug hole. 3:retake comperssion reading of cylinder. if the compression reading increases you have bad rings, if it doesnt the rings are fine. hope that helped and not confused you Geoff
How are the cylinders numbered in Bugatti Yeyron?
they are usually numbered by tubes in the motor such as if a Toyota has 4 cylinders they will be tubed in the motor
What should the compression be at on a 150 hp mercury outboard motor?
I should be equal on all cylenders and about 110 to 120
What would make your car not start?
There could be many reasons as to why, but here are a few:1. The engine must be turned over by the starter motor with enough speed to catch. For this to happen, the battery must have enough charge, the starter motor and the starter circuit should be OK.2. Fuel mixed with air in the correct proportion must be supplied to the enigne cylinders;3. Spark - there must be a strong spark at the proper moment to fire the air/fuel mixture.4. Proper timing - the engine valves should open and close in appropriate time.5. Compression - normal compression in the cylinders is 120 - 170 psi. The engine won't start if the compression is lower than 70 - 80 psi.
What should the compression be for a 50 hp 4 stroke Mercury outboard motor?
125 is the least
Should supercharged a motor be low compression or high?
The more boost you use the lower compression you want. Higher compression with boost leads to detonation which leads to excess engine wear and damage.
