Simple Question How do i pressure check--- or do a compressions check on my engine---
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flierromeo
Joined: Nov 2006
Posts: 27
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From: New york
Simple Question How do i pressure check--- or do a compressions check on my engine---
How do i pressure check--- or do a compressions check on my engine--- and what are the proper psi's for a 87 N/A???
El Mas Tiguere...DR
Joined: Sep 2007
Posts: 260
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From: Big Red Country
I got 3 letter word for you and it starts with a F and ends with an M...
still can't get it? its FSM!! search it or im guessin within 35 seconds the links will be provided by another member... or try FAQ's
still can't get it? its FSM!! search it or im guessin within 35 seconds the links will be provided by another member... or try FAQ's
meh
Joined: Sep 2002
Posts: 801
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From: Tallahassee
Buy a compression tester. Remove the EGI fuse. Remove a spark plug, screw in compression gauge.
Normal compression gauges hold the highest pressure on the gauge until you press the release valve. So, what you'll need to do is hold the valve down with your finger, while someone else cranks the motor over. What you're looking for is 3 even pulses: 1 pulse and 2 very small (or none) pulses means an apex seal is blown.
Replace spark plug, and do the same for the other rotor.
I'm not sure what "normal" numbers are, but that's a good way to find out if an apex seal is blown using a normal compression tester.
Normal compression gauges hold the highest pressure on the gauge until you press the release valve. So, what you'll need to do is hold the valve down with your finger, while someone else cranks the motor over. What you're looking for is 3 even pulses: 1 pulse and 2 very small (or none) pulses means an apex seal is blown.
Replace spark plug, and do the same for the other rotor.
I'm not sure what "normal" numbers are, but that's a good way to find out if an apex seal is blown using a normal compression tester.
FSM in sig.
Using normal compression gauge, see above...
Gatlin said:
"Normal compression gauges hold the highest pressure on the gauge until you press the release valve. So, what you'll need to do is hold the valve down with your finger, while someone else cranks the motor over. What you're looking for is 3 even pulses: 1 pulse and 2 very small (or none) pulses means an apex seal is blown."
The overall procedure is in the FSM, engine chapter.
Using normal compression gauge, see above...
Gatlin said:
"Normal compression gauges hold the highest pressure on the gauge until you press the release valve. So, what you'll need to do is hold the valve down with your finger, while someone else cranks the motor over. What you're looking for is 3 even pulses: 1 pulse and 2 very small (or none) pulses means an apex seal is blown."
The overall procedure is in the FSM, engine chapter.
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Boost ahoy!
Joined: Jan 2006
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From: Joplin, MO
9)
let out on the valve now, and let the tester reach an overall compression value for all 3 faces(highest of 3 will be displayed). 115+ is like new, 100-115 is healthy, 90-100 is getting weak(1 year or less in most cases) below 90 could blow at any moment.
let out on the valve now, and let the tester reach an overall compression value for all 3 faces(highest of 3 will be displayed). 115+ is like new, 100-115 is healthy, 90-100 is getting weak(1 year or less in most cases) below 90 could blow at any moment.
This was around 7 months ago.
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