What should the cylinder compression be for a 1914cc vw engine when using a compression gage in spark plug hole
Don't know the specs for it, but it has to be over 100psi in each cylinder for the cylinder to fire and produce power. Less than that and it is questionable if the cylinder will even fire.
Do all of the cylinders. If the lowest reading is within 75% of the highest reading, then it is good.
Example- Nissan engine had highest reading of 160 psi, and lowest was 145 psi. That was a good engine with normal power. Another Datsun engine had highest 140 psi and lowest of 125 psi. Also a good running engine, but you could tell the power was just slightly reduced compared to a newer engine. Your VW should be somewhere in this range, the higher above, say, 140 or 150 psi, the better. If below 100psi, then probably internal mechanical problem.
Feb 17, 2017 |
Cars & Trucks