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Engine Specific Info and Questions => IDI Engine => Topic started by: Smokey Eddy on November 19, 2010, 02:00:13 pm
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Looking for a compression tester. Southern bc. Right next to the border to WA.
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I bought on of these of ebay a couple years ago and have been happy with it:
http://cgi.ebay.ca/DIESEL-COMPRESSION-TESTER-ADAPTER-GAUGE-VW-MERCEDES-NEW-/380288719481?pt=Motors_Automotive_Tools&hash=item588af95a79
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Great thanks for finding that for me!
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Wayland, would it be possible for you to post a picture of the tip of your end which you screw into the injector hole? In other words, the point at which the pressure enters the tester.
I just want to compare the tip of it to my Mac compression tester. There is a reason I want to see it if at all possible. The reason is that my Mac allows pressure to enter directly in the middle....leading me to think I should leave the old heat shield in the hole....even though the Bentley says to take heat shields out when using the official VW compression tester.
I tested my friend's engine the other day and leaving the heat shield in yielded about 50 lbs. more per hole.
Thank you.
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Well the shield will take up volume that would otherwise be compression loss.
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I'll get a pic as soon as I can. I think I left the heat shield in last time I used it. My tester has a sort of adapter sleeve thingy with two copper sealing washers. I think this is because it's designed to work with a multitude of different motors. This will all make more sense once I post a pic!
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I had a problem with my car one time when that happened. There was such a huge air pocket in the fuel line that I thought it the fuel line was full of fuel. What I did was take the in and out banjo, look inside to see if there was fuel to the top of the fittings. If there wasn't, I filled the IP with ATF because it was a little thicker. Then I had a empty plastic bottle, filled it up with diesel, and ran a piece of fuel line with an inline filter to the in banjo, and ran a piece of fuel line from the out banjo to to the plastic bottle. That way, if the car started and ran, I could better diagnose the problem, be it a fuel issue from the fuel filter back, or stuck vanes inside the IP. Hope this helps!