Engine Dead - Need help - 986 Forum - The Community for Porsche Boxster & Cayman Owners

mikefocke · 01-09-2011, 06:16 AM

The timing chain that drives the cams goes around the teeth attached to the IMS (recall that the IMS is an intermediate shaft used to translate crankshaft motion to camshaft motion though the IMS term is often used as shorthand for the bearing in the forums). If the bearing gets loose, it can cause the chain to jump a tooth and the timing to be out. One of the ways of telling if the IMS is worn and wiggling is to compare the camshafts timing.

BYprodriver · 01-09-2011, 10:14 AM

I suspect you may have a IMS bearing problem. Knowledgeable boxster owners are always looking for a good time to inspect their IMS bearing since this is the only way to know it's actual condition. Sounds like this is a "good" time for you. Your OK oil filter is a good sign.

2TrunkSteve · 03-01-2011, 08:26 PM

After all the stress and worry, I finally took it to a shop. One new fuel pump later and it ran! The indy mechanic tells me the original was putting out 0-30 lbs of pressure. I'm hoping to tidy up a few other maintenace items and I'm working on a price for a new clutch and the LN Engineering bearing upgrade. Hopefully it will be something reasonable and I'll have her back on the road.

I can't wait, it's been 3 months!

BYprodriver · 03-01-2011, 08:47 PM

Good for you, failed fuelpumps seem to be the problem of the year so far!

I should check my fuel pressure.