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valve guide ----- Original Message ----- From: "Scott Moeller" <scmoeller@email.msn.com> To: <type3@vwtype3.org> Sent: Saturday, May 05, 2001 11:59 AM Subject: [T3] the band has been stumped > Happy 5th of May, > > I recently rebuilt the engine in my 1970 SB ~ stock 1600 with FI > > All was fine and dandy for approx 200 miles, and yes, I've been taking it > easy during break-in. Compression was solid at 135 on all four cyls. and > the engine was running cool. The other morning I went outside to start her > up and the engine sounded like p**p, it seemed as if it was only running on > 2 cylinders. > > I was getting good spark to all 4 plugs, I checked fuel pressure and that > seemed ok, maybe a bit low (27#), I pulled the injectors and they were > working properly. A compression check showed 135 at 1,2 and 4 cyls, BUT #3 > was reading 90#. I then installed another FI brain that I knew was good and > made sure all wires were solid. > > It was late, so the next day I went to start her up, and she was running > great! Compression was back up to 135 in cyl#3. I shut the car off and > left for work in my always dependable 66 westy. When I arrived back home, > anxious to start up the SB, my wife had moved the car out of the garage and > she said the car was running poorly again, arrgh!!! Another compression > check showed 90# on #3. > > So, off went the car to my trusty mechanic for a peek. The same thing > happened to him, the car would run great for 5 minutes or so and then start > running rough. He performed a leakdown test and the car passed with flying > colors. > > He's stumped, I,m at my wits end... The only thing I can think of is that > there's a problem with the #3 intake valve. The heads I used were new VW > and were taken to my machine shop for a 3 angle grind before installation. > > Any ideas before I pull the engine I just spent months carefully putting > back together? > > Thanks, and I apologize for being so long-winded > > Scott Moeller > Kirkland, WA > > > ------------------------------------------------------------------- > List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org >