White smoke? |
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White smoke? |
VaccaRabite |
Feb 18 2018, 11:46 PM
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#1
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
https://www.youtube.com/watch?v=Ib4VMyWAwl8 Got Matt's car running this weekend after a few years down. 123 ignition installed and timed. Valves adjusted. Car is a 1.7 with stock injection. Its blowing prodigious amounts of white smoke when the engine is under load. I did not check compression. Matt assumes a vacuum leak, which is certainly possible. Curious notes: all the valves were tight EXCEPT the valves for cylinder 3, which were in spec. Okay brain trust. What'ca got? Zach |
saigon71 |
Feb 19 2018, 03:50 PM
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#2
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Advanced Member Group: Members Posts: 2,000 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region |
I may have been the last one that helped Matt with his car before you Zach. That was several years ago.
Agree with checking on the age of the gas. Treat existing gas with Star-Tron, fill up with fresh gas and bang a can of Sea Foam in there as well. Aside from the smoke, did it run well? If so, I'd run it a little and see if things clear up before digging too deep. Let me know if you guys need a hand with anything. |
VaccaRabite |
Feb 20 2018, 07:46 AM
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#3
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I may have been the last one that helped Matt with his car before you Zach. That was several years ago. Agree with checking on the age of the gas. Treat existing gas with Star-Tron, fill up with fresh gas and bang a can of Sea Foam in there as well. Aside from the smoke, did it run well? If so, I'd run it a little and see if things clear up before digging too deep. Let me know if you guys need a hand with anything. Bob, do you remember if you did Matt's valves? For the life of me I can't think of a reason why all the valves BUT the valves on Cyl3 would be tight. In all my experience, its the other way around. The valves on CYL 1, 2, 4 were tight enough that I could not get a feeler gauge in there with the engine cold. Cyl 3 was perfect. It was like someone just did a valve adjustment on that cylinder. I wish I had thought to do a compression check. Zach |
sithot |
Feb 20 2018, 08:39 AM
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#4
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Member Group: Members Posts: 446 Joined: 25-October 06 From: Virginia Member No.: 7,090 Region Association: None |
I'd dump the tank, adjust the valves and put in 5 gallons of VP or Sunoco Optima and beat it like a rented mule.
FWIW; the older air cooled 911's can smoke when they sit up a long time due to oil flowing back into the sump and finding it's way into the cylinders. Jeff Gamroth sells one way valves off the sump for this very reason. Good luck. YMMV |
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