DID A DUMB THING

[answered prayer]

HOPE SOMEONE CAN HELP ME WITH THIS. I DID A COMPRESSION CHECK ON MY 87 125HP FORCE. I WAS IN A HURRY, AND I MUST OF HAD A SENIOR MOMENT.AFTER I TOOK THE READINGS AND DISSCONNECTED EVERYTHING, I REALIZED TWO THINGS. <br />1)THE MOTOR WAS COLD.<br />2)THE THROTTLE WAS PROBABLY ONLY PARTIALY OPEN.<br />DOES ANYONE KNOW HOW THIS MEANT EFFECT THE READINGS? THE READINGS FOR THREE CYLINDERS WAS ABOUT 120 AND THE FOURTH WAS ABOUT 110. COULD I EXPECT THAT IF I HAD TAKEN THE READINGS UNDER THE RIGHT CIRCUMSTANCES, THEY WOULD BE HIGHER?.<br /> THANKS

 

[Bob_VT]

Re: DID A DUMB THING

Please don't shout (all capitols) Thank you. <br /><br />Your motor compression sounds fine. Yes a few mistakes were made but none that cost any money. Even if you had higher readings with a warmer motor they are all still within range. If you still have doubts do them again.<br /><br />Bob

 

[beachcraft]

Re: DID A DUMB THING

Hi,<br /><br />The cold engine will have a higher reading. When the engine is warm, the engine expands and you will get more accurate readings.<br /><br />BC

 

[Hooty]

Re: DID A DUMB THING

Yeah, they probably would have been a little higher but what you're looking for is not how high the pressure is but how consistent (for lack of a better word) the readings are. Ideally, all four cylinders would be the same but all within 10% of each other is acceptable.<br /><br />c/6<br /><br />Hooty

 

[Dhadley]

Re: DID A DUMB THING

If that's the dumbest thing you ever did you are WAY ahead of me! Sorry, didnt mean to shout.<br /><br />Sounds like all is well in Forceland. <br /><br />Enjoy!