Sierra3
Registered
I’ve been gone for a while taking care of things after SSHS14 catching up in school and getting finals out of the way for school.
Took the car out about a month or two ago and did bad things to it. Well, fun for me, bad for the car. Long story short, I think I blew the head gasket on driver’s side out hot dogging it around on the street (those long deserted back roads are much too tempting to play MPG watching games). After I passed 5 cars at once that were g heading up a long bridge over the ocean, (thinking to myself holy crap this thing pulls like a monster! Trying to keep it going in straight line, then) BAM, POP and the dreaded white smoke and burnt oil smoke comes pouring out right side. So I pulled over, watch the 5 cars I just passed come back by me through the smokescreen honking, checked the oil, and brought it back to the garage here.
3 or 4 weeks of wondering what happened and waiting for time off to mess with it tonight finally came. Whipped out my new compression test gauge and fittings kit, and got to work tearing it down. After cleaning out the oil on plug number 1 and 8 from a leaking PCV filter setup, I was able to get all the plugs removed, throttle body fully opened, all electronics and coils disconnected, and compression testing started and here are the results.
I know you’re supposed to do compression checks with engine fully warmed up, I wasn’t about to let the thing idle and smoke up the garage. (the damage here is already done, so I’m just interested in the numbers to see what we’ve got). So all these are done with cold engine, just plugging it in and 6-8 cycles of rotation each. I then set the phone to 2 minutes for timers on each leak down. Then after that I wetted each cylinder with oil squirts, and redid all the tests in same order.
Basically I think im just looking at worn rings and possibly a blown head gasket between cylinders 7 &8. Let me know what you guys think. I had already made up my mind to rebuild the other Teksid block from the other Mark with all forged internals, but this just pushes up the time frame faster now. Check out my numbers. I have no idea what’s up with cylinder 8. All of the cylinders held their pressures fine and hardly leaked down but number 8 only made 30psi????? haha kind of lost on that one. Did number 8 twice. Well know for sure when i get it out of there, tore down and inspected. Ok, here’s a pic of my notebook readings.
Took the car out about a month or two ago and did bad things to it. Well, fun for me, bad for the car. Long story short, I think I blew the head gasket on driver’s side out hot dogging it around on the street (those long deserted back roads are much too tempting to play MPG watching games). After I passed 5 cars at once that were g heading up a long bridge over the ocean, (thinking to myself holy crap this thing pulls like a monster! Trying to keep it going in straight line, then) BAM, POP and the dreaded white smoke and burnt oil smoke comes pouring out right side. So I pulled over, watch the 5 cars I just passed come back by me through the smokescreen honking, checked the oil, and brought it back to the garage here.
3 or 4 weeks of wondering what happened and waiting for time off to mess with it tonight finally came. Whipped out my new compression test gauge and fittings kit, and got to work tearing it down. After cleaning out the oil on plug number 1 and 8 from a leaking PCV filter setup, I was able to get all the plugs removed, throttle body fully opened, all electronics and coils disconnected, and compression testing started and here are the results.
I know you’re supposed to do compression checks with engine fully warmed up, I wasn’t about to let the thing idle and smoke up the garage. (the damage here is already done, so I’m just interested in the numbers to see what we’ve got). So all these are done with cold engine, just plugging it in and 6-8 cycles of rotation each. I then set the phone to 2 minutes for timers on each leak down. Then after that I wetted each cylinder with oil squirts, and redid all the tests in same order.
Basically I think im just looking at worn rings and possibly a blown head gasket between cylinders 7 &8. Let me know what you guys think. I had already made up my mind to rebuild the other Teksid block from the other Mark with all forged internals, but this just pushes up the time frame faster now. Check out my numbers. I have no idea what’s up with cylinder 8. All of the cylinders held their pressures fine and hardly leaked down but number 8 only made 30psi????? haha kind of lost on that one. Did number 8 twice. Well know for sure when i get it out of there, tore down and inspected. Ok, here’s a pic of my notebook readings.