An average compression test reading for a Chrysler 318 engine typically ranges from 150 to 190 psi across all cylinders. Variations can occur due to factors such as engine wear, mileage, and maintenance history. It's important to have relatively uniform readings among the cylinders; significant discrepancies may indicate potential issues like worn piston rings or valve problems. Always consult a service manual for specific specifications related to your engine's year and model.
120 - 140
100-125 psi
150 psi should not vary by more than 10 psi between cylinders
100-125 psi
typical compression test reading fora diesel engine
do it with engine warm for better sealing, pull all the plugs so it is easier on the starter and disable fuel for the test
140-150 lbs.
The average compression test reading for a Porsche 911 2.7L engine typically falls between 145 to 165 psi across all cylinders. Readings that are consistent and within this range generally indicate a healthy engine. Significant deviations or low readings in any cylinder may suggest issues such as worn piston rings or valve problems. Regular compression testing can help in diagnosing engine health and performance.
The average compression test reading for a 305 engine typically ranges between 150 to 190 psi, depending on the specific engine configuration and condition. Consistent readings within this range indicate good engine health, while significant variations may suggest issues such as worn piston rings or valve problems. Always refer to the manufacturer's specifications for the most accurate assessment.
If the difference between the high and low reading is within 10%, it is withing normal specification. If more than 10%, try squirting oil into the low cylinder and retest, if compression comes up , this indicates a bad ring, if not indicates problem is a bad valve.
Hi,iv'e got a 4hf1 Isuzu. What will the correct compression reading be if i do a test on the engin?
Maybe it has no compression--take compression test