2qwik4u

car is running rough. Im getting a PPI done on thurs. I told him I wand a full PPI(leak down/compression) he says no need unless car is running rough. Does this guy know what hes talking about, this is a Porsche dealer BTW!

theiceman

sorry but i can not make sense of this post ..

2qwik4u

Let me reword it then..Im having a PPI done on a car I intend to purchase. I told the service advisor that I would also like a compression and leakdown test done as well in ADDITION to the PPI. He said "no need unless car is running rough"

I hope thats more clear...if not i'll try to draw you a picture.

imcarthur

Stop. Cancel the PPI & find an independent garage that knows older Porsches. Dealers often only know the newer cars. And if you want compression & leakdown, YOU are the customer & he should do whatever you are willing to pay for.

Ian

Brads911sc

As a matter of reference... When I bought my 83... I went in to a respected and well regarded porsche mechanic... all he works on is old Porsches and Ferrari's... and he said the same thing to me...

imcarthur

Well, I sent 2 cars for PPI that ran really well & failed compression & leakdown in one or more cylinders. I also always asked for a head stud check which added to the cost but gave me piece of mind.

Ian

2qwik4u

It seems like the safest bet is to do leakdown and compression test regardless!

old man neri

I asked the mechanic that did the PPI on my car this. He wanted to only do the leakdown if you have poor compression. Which is what happened to my car.

But really, when you are in that far what's an extra $100.

-matt

Steve Weiner-Rennsport Systems

24 kt advice,.............................!!!!

speedtek

I always do a compression and leak down on a car that I am buying. It may give you some bargining power also. I bought a 914 once upon a time. the guy wanted $1200 for the car. He told me the engine ran great but to me it was slow for a 2.0 I took the leak down and comp test. which showed the car to be 90lbs per cylinder +/- 10% and a 12% leakdown. He felt so bad he sold me the car for $300! So with the money I saved I rebuilt the heads and changed the piston rings. turned out to be a excellent auto-x car for a few years.

Mike Murphy

I test drove a great SC that had an engine rebuild on it. Ran very smooth and seemed to have plenty of power. The PPI leakdown test revealed double-digit leakage on only 1 cylinder. Instantly, you're talking about a minimum of $3k repair on a car like that, and that's the best news. The worst would be $10k. No thanks.

MUSSBERGER

Double ditto

Rick K

x4 take it to an independant shop that knows what they're talking about. $300 is cheap for peace of mind on an investment like this IMO

pjc

I believe it is worthwhile doing both compresion and leak down however, my
'76 had factory figures with the advice to 'don't strip' but on detailed inspection all the wearing components were on the end of their tolerences hence new pistons, barrels, cams, followers etc. so the figures aren't the final answer I guess.

PJC

dshepp806

Exodus,..4sure.

Find the right dude to handle your requests....


Best,

Doyle