Cylinder Compression test question
#1
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Cylinder Compression test question
4 Block the throttle wide open (how do i do this ?)
5 Disable the fuel and ignition systems by removing the ECM fuse and the IGN or C31 fuse. (i know how to do this just pull the fuse'* i got that) As an added precaution, detach the electrical connector from the coil pack. ( how do i do that ?)
These are the exact words for step 4 and 5 in my haynes repair manual for doing a cylinder compression check. My questions again are how do i block the throttle wide open? and what does it mean to detach the electrical connector from the coil pack? Is that just removing the spark plug wire from each coil in the coil module.
5 Disable the fuel and ignition systems by removing the ECM fuse and the IGN or C31 fuse. (i know how to do this just pull the fuse'* i got that) As an added precaution, detach the electrical connector from the coil pack. ( how do i do that ?)
These are the exact words for step 4 and 5 in my haynes repair manual for doing a cylinder compression check. My questions again are how do i block the throttle wide open? and what does it mean to detach the electrical connector from the coil pack? Is that just removing the spark plug wire from each coil in the coil module.
#2
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Posts like a Ricer Type-R
Blocking the throttle wide open will prevent fuel delivery (this is a trick to remember if you flood your car). Do it with a stick on the pedal, or tie the throttle full open under the hood.
Disconnecting the ICM connector (main harness) or disconnecting all 6 coils. Either way.
Or you can pull your ECM fuse to prevent fuel delivery. This will NOT prevent spark, however. The first few seconds of spark are provided by the ICM before the PCM takes over.
Disconnecting the ICM connector (main harness) or disconnecting all 6 coils. Either way.
Or you can pull your ECM fuse to prevent fuel delivery. This will NOT prevent spark, however. The first few seconds of spark are provided by the ICM before the PCM takes over.
#3
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Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
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When I did the compression test on my old bonneville, I unplugged the ICM so there was no spark at all, I also had the accelerator sticked.
I can tell you, at a 152ish thousand miles, my old L67 had from 152-160 lbs in each cylinder.
I can tell you, at a 152ish thousand miles, my old L67 had from 152-160 lbs in each cylinder.
#6
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is the ECM fuse under the hood in the max relay center. And which IGN fuse do i pull on the driver side fuse 5A Ignition (Run), Automatic A/C Control, Base Cluster or fuse 1D Ignition (Run/Crank), Chime, Cluster.
#8
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Originally Posted by wf2tm51
So how do i keep the pedal down to keep the throttle open
#10
DINOSAURUS BOOSTUS
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Get yourself a helper. Put them in the car. Meanwhile..pull the ICM connector as mentioned. Take out all the plugs.
Have them hold the pedal to the floor. Then crank a little. check your compression. Move to next cylinder and repeat for all cylinders.
Put it all back together.
Have them hold the pedal to the floor. Then crank a little. check your compression. Move to next cylinder and repeat for all cylinders.
Put it all back together.