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Registered
Join Date: Aug 2002
Location: Tucson AZ
Posts: 1,119
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81' NOW blows smoke !!!!!
I wish I would have went with nikisil Cyl,...My 3.0 now blows smoke on start up...it was doing GREAT until this morning...hit the key and Puff...what a shame...and it pisses me off...the car has almost 500 miles on the top end re-build...any chance it could go away..???????????? Thanks Frank
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09-25-2004, 09:27 AM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Did you overfill the oil?
Joe |
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09-25-2004, 09:33 AM
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Join Date: Jan 2002
Location: SF Bay Area, CA
Posts: 1,861
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I thought they all blow smoke occasionally on startup?
Were you parked on an incline? I ask because my '81 doesn't normally smoke on startup when on level ground but when it's parked on an incline it will blow a huge cloud. |
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09-25-2004, 10:20 AM
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Join Date: Aug 2002
Location: Tucson AZ
Posts: 1,119
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Yes, they CAN blow smoke but this engine only has 500 miles...I never dreamed that it would, and it's on a flat surface ...Well,..I might be a QT hi but, I'am not on the max mark...And yes it sits about 27" hi in the rear but...I would'nt think that matters. Does the oil ring rotate inside the Cyl. they fit tight when I assembled...I have not used any oil in those 500...Thanks Frank
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09-25-2004, 11:10 AM
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Somewhere in the Midwest
Join Date: Oct 2001
Location: In the barn!
Posts: 12,499
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The rings can rotate. We've had to take the top end off and rotate them, then give them a good breaking in.
What was your break in process? Not saying you'll have to take it apart, but it's possibility. |
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09-25-2004, 11:13 AM
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Registered
Join Date: Aug 2002
Location: Tucson AZ
Posts: 1,119
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I followed Wayne's instruction's in the rebuild book,..to the letter...and it went great until today,..I need to re-torque the heads ,and 500 mile valve adj, but I bet its ring slipage.FM
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09-25-2004, 11:27 AM
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Registered
Join Date: Apr 2003
Location: Las Cruces, NM
Posts: 2,459
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You know, at about 150miles into my top end rebuild, it started to puff on started up. I started freaking out thinking i did something wrong, then about three more cold starts after that it stopped. So i checked the oil level and it was a hair under the full mark, oops.
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2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix 
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09-25-2004, 12:23 PM
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Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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My motor has a total pro rebuild about 4k ago. It smokes on every other start-up or so. It gets more than 1000 miles to a quart, however. I had a leakdown done on it at pre-purchase two months ago. Less than 10% across all 6. I was told (here and by mechanic) the smoke was a normal condition for a boxer motor.
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09-25-2004, 12:23 PM
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Registered
Join Date: May 2003
Location: Canada
Posts: 501
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Prior to my top end rebuild, my 1987 Carrera smoked on start up and got approx 600 miles per liter. After the rebuild , it rarely smokes on start up and gets approx 2000 miles per liter. Break in consisted of varying the RPM for the first 1000 miles.
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1987 Carrera, Venetian Blue. |
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09-25-2004, 01:50 PM
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Registered
Join Date: Aug 2002
Location: Tucson AZ
Posts: 1,119
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Hey....Thanks for the Info guys...I'am ok with a little but I still hope it goes away ...I shall monitor the issue for the next few thousand miles....Thanks Frank
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09-25-2004, 07:31 PM
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Registered
Join Date: Apr 2003
Location: Las Cruces, NM
Posts: 2,459
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One more quick tip, in order to properly seal ausil rings/cylinders during break in, I've heard and tried the accel/decel method of accelerating hard to 5k rpm then letting off the throttle and coasting down to 3k rpm, then repeat.
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2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix
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09-25-2004, 10:42 PM
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Registered
Join Date: Aug 2002
Location: Tucson AZ
Posts: 1,119
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Sounds like fun...My car has 964 cams and I enjoy the various RPM'S Hope it pays off ...I 've got 500 more miles for break-in, So I shall do it wisely.Thanks FM
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09-26-2004, 09:12 AM
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