Smoke Test Cylinder
#1
Smoke Test Cylinder
My 97 V6 2.7L accord that I newly acquired will not run for more than 5 miles before it smoke and kills the engine. When I wait about 15 minutes it starts back up again like nothing happened. I suspect it's the head gasket so I performed a leak down test with the harbor freight leak down tester but can't seem to make it work properly so I ditched the leak down and perform a smoke test on the cylinder instead. I placed the cylinder I suspect having a leak at TDC and plugged the smoke tester into the spark plug hole. The smoke started coming out of the other spark plug hole to the left of it. I performed the same test on the cylinder the smoke came out of and the smoke didn't come out of anything. Checked the oil cap, radiator cap, oil dipstick, throttle body and exhaust pipe and nothing. What does this mean? head gasket? What else should I test for?
#3
I had to google this video to understand the 4 stroke process I hope it helps other understand getting TDC on compression stroke.
Last edited by gpro; 08-27-2014 at 03:20 PM.
#5
...unless the head gasket is leaking between the two cylinders.
Give the leak down tester another try. If the HG is bad between cylinders then you'll hear air leaking into the adjacent cylinder. A stethoscope - or even a piece of tubing held to your ear - put down into the spark plug hole is helpful.
Give the leak down tester another try. If the HG is bad between cylinders then you'll hear air leaking into the adjacent cylinder. A stethoscope - or even a piece of tubing held to your ear - put down into the spark plug hole is helpful.
Last edited by Roader; 08-27-2014 at 03:51 PM. Reason: tubing
#7
Mine leaked between at least a couple of cylinders; could hear it clearly when a cylinder was pressurized. Siamesed cylinders with not much meat between them.
OP: This has no bearing on your problem, if any.
OP: This has no bearing on your problem, if any.