I Googled the matter to pass along a good procedure since I have heard so many different methods. Some say use a warm engine others say cold. I prefer cold. Some squirt a little oil in each spark plug hole. I do not. I have always removed all the spark plugs first. These guys don't: http://www.2carpros.com/dia/how_to_check_compression.htm I also hold open the throttle while the engine cranks. A couple of times I attached a battery charger to try and keep the voltage even. Good Luck, Ken Lewis
On Thu, December 31, 2009 1:06 pm, Stephen Cebula wrote: > I'm looking at an 84 Westy on Saturday. The guy want $6500 for it. It > looks really clean but has 170K on the original motor. He sent me a copy > of the compression test he had done in 2007 when he bought it. It shows > 140psi on all 4 cylinders. I'm planning on having another one done when I > go look at it. What would be an acceptable number? I've heard 145-190. > > Thanks, > Steve > > > > > |
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