Try this link, Its everything I know and some info I've plagiarized from other sites. http://williamwareagency.com/forsale/stanvan/buyused.htm Stan Wilder
On Thu, 2 May 2002 16:23:53 -0600 "Thompson, Michael" <METhompson@GOLDER.COM> writes: > Following helpful suggestions from the Vanagon community I took my > leaky > aircooled Westy for a leak-down test. The reported test values are > as > follows: > Cyl 1 100/30 psi > Cyl 2 100/62 psi > Cyl 3 100/44 psi > Cyl 4 100/50 psi > > The garage says that the air could clearly be heard coming from the > crankcase breather. These strike me as very poor results indicating > the > engine is in a very poor state and requires a full rebuild (as > recommended > by this garage - new pistons, rings and barrels as a minimum). > Before buying > the vehicle, I took it to a reputable VW specialist who said the > engine was > good. I have spoken with them regarding these new results and they > cannot > believe it and want to carry out their own leak-down test. > > Now what I don't understand is the following: > 1 The engine starts and runs well and has never failed me in 5 > weeks > use (and that includes -15 degrees in Calgary). > 2 The engine burns some oil but nothing exceptional for a > 100,000 mile > engine. Slight blue smoke on acceleration. > 3 I have monitored the air coming from the breather at idle > and higher > revs and it is not particularly blue or smokey. > 4 I have oil leaking from the 2 main crank seals, oil cooler, > possibly > cylinder heads, and pretty much anywhere else it can find its way > out of. > 5 If all this leakage was from blow-by, surely it would burn a > lot of > oil. Does a leak-down test positively identify the source of the > leak? If > the valves were not holding, could the air flow into the head and > down the > pushrod tubes into the case? Something does not add up here. I am > going to > carry out a normal compression test this evening and see if I can > increase > the results by putting engine oil in the spark plug holes. > > I do not have a particular problem with power or the running, but > the oil > leak is too excessive on long or uphill/headwind journeys. Does > anyone have > any advice on my next move as at the moment it looks like an engine > strip > and rebuild! > > As always, any help is much appreciated! > Regards > Michael > 81 Westy 'Daisy' > > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. |
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