Subject: RE: Ambo compression testing
Author: Rob Prins
Date: Oct 2, 2002, 6:01 AM
Post ID: 1711128057
Thanks for all the input, I was checking the compression as a way to
rule out possible causes for some problems I was experiencing. The
compression is about nuts on from side to side, but I was concerned that
it was high relative to the (apparently bogus) calculator number.
Thanks again for helping me clear that up.
Rob
Jesse Open wrote:
| Too much anxiety over numbers. Is it running OK ? Is the side to side within 10-15 psig ? OK enjoy ! Bourdon tube gauges are not at all accurate. Establish a baseline for your good running engine with your gauge at watch the side to side readings.Relative readings are what you are looking at. Don't need to invent problems if your engine is running OK. When I worked at Sun Electric we tested different compression testers from numerous makers and they varied over 30 PSI depending on manufacturer ,guage accuracy,hose length, cracking pressure of the check valve etc. Some makers use Schrader tire type check valves that may have as much as a 20 psig cracking pressure. The cracking pressure is subtracted from the indicated pressure giving a false reading. If it has no running problems linked to compression problems RIDE ON :-)) Rich Zink wrote:
1969 V700 Euro 1972 Eldo LAPD 1993 Cal III Fuel Injection |