Re: [Peugeot-L] 1980 505 diesel...lots of blowby?

From: Brian Holm <peugeots_at_vtlink.net>
Date: 06/05/05


Matt

The breather smoke is typical, if not normal. You may reduce the amount of actual oil it throws out by assuring that there is a clean wire mesh filter in the cap, and by using a longer hose draped upward over the coolant tank before running down toward the ground (Keep it off the exhaust pipe!). Don't connect it to the air filter unless you convert to the pre-'80 filter housing and foam element.

The 1980-on non-turbo diesels typically started using excessive oil due to ring and bore wear by 60,000 miles. I have no explanation for that; the '77-'79 diesels with the CAV injection pump didn't do it, and the TDs with the Bosch pump didn't. To stop it you will need to replace the piston rings and, if there is excessive ridge in the bores, to do it right you would have to bore the block and use oversize pistons. That is one reason I recommended finding a turbodiesel instead when you first mentioned buying this car to the list.

I could make you a really good deal on a set of oversize pistons, but with the total expense of the bore job, and the fact that you still have a slug which is likely going to burn oil again in less than 100,000 miles, I would recommend swapping the engine out for a good '81TD, which is a pretty straightforward swap if you use your present flywheel. Of course the BA7 four speed with the 8" clutch is a bit light duty for a TD, and you lack the overdrive fifth gear, so a better deal would be to get a complete TD engine with transmission (any year will work if you get the starter too). That is a pretty straightforward swap too -- your radiator would work, but you would need the oil cooler and lines, and a complete TD sedan exhaust system. The speedometer and odometer would not be accurate.

I am very sorry to be so pessimistic here. Please excuse.

Brian Holm, Parts for Peugeots

At 02:46 AM 6/4/2005, blade44m wrote:

>Another 505 question...
>
>My car pumps tons of smoke out of a crankcase vent hose that empties
>out under the car. Is this normal? Is the hose supposed to be
>connected to something, say back into the intake system? It does this
>even when it's cold, and it's bad enough that you can see smoke
>curling from under the hood while you're idling at a light.....
>
>-matt
>
>
>
>
>
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Brian Holm, Parts for Peugeots
at Peugeot Holm, since 1969
2120 Maple Hill
Plainfield, VT, 05667
802-454-7132, fax -1310


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