Re: IML: Oil usage theories
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Re: IML: Oil usage theories



If the seals are bad you will usually have smoke when you start the car after it has been sitting. If the rings are bad you get smoke on acceleration and deacceleration.. ----- Original Message ----- From: "Rob van der Es" <r.vdes@xxxxxxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Tuesday, November 13, 2007 11:55 PM
Subject: Re: IML: Oil usage theories


Although I am not an engine expert, with worn valve seals you will have blue smoke at acceleration and engine braking (what happens if you suddenly release the accelerator at high speed?).

I guess you car is equipped with a PCV system you might check it, maybe the valve is stuck. You can clean it with solvent then.

Good luck,

Robert

P.S.: Don't forget: even when our Imperials where new, it was not unusual for them to use some oil :)


----- Original Message ----- From: <therichardsonfamily@xxxxxxxxxxx>
To: "IML" <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Tuesday, November 13, 2007 7:20 PM
Subject: IML: Oil usage theories


Hello everyone (& Dave):

I have excessive oil usage on my '67 Imperial engine. Not much of a surprise with 150K+, and sitting for a decade. 1 quart/150 miles at 70 mph, & 1 quart/300 miles at 45ish avg. mph around town. I know the correct answer is to do a complete rebuild. Can't quite pop for that right now, as there are too many other priorities for my next $3000.

Compression check months ago was OK, no blue smoke at cold start up (even if sitting for days), no blue smoke at hard acceleration, or after idle - just no blue smoke at all. Idles and drives quite well, gets about 11 mpg. Pulled the plugs yesterday after 3000 miles, and they were nicely tanned/greyed, clean everywhere except wet oil on the threads.

Dave had mentioned earlier that big block Mopars have a tendency to need valve seals. If that is what's indicated by the above evidence, I could probably find the resources to pull the heads.

Any expert (or otherwise) theories and thoughts would be most welcomed.

Dan Richardson
300L Family Heirloom


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