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Compression test - fuel disconnect???

1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Compression test - fuel disconnect???

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Old

May 22, 2020 | 10:20 AM

#1

Hobby welder

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Laughing Gas

Joined: Apr 2013

Posts: 1,092

Likes: 34

Compression test - fuel disconnect???

Folks, for a compression test, how do I stop the flow of fuel so I don’t flood the motor?

ive got the spark plugs out, main distributor plug disconnected, is there a fuse or another plug?

’93 F250 351w

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Old

May 22, 2020 | 10:55 AM

#2

Briansshop

Fleet Mechanic

Joined: Aug 2005

Posts: 1,277

Likes: 89

From: MD

Leave the key off,spin the motor at the starter solenoid

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Old

May 22, 2020 | 11:42 AM

#3

Binkowski

More Turbo

Joined: Feb 2014

Posts: 632

Likes: 41

Just pull the relay for the fuel pumps then they wont pump while you crank.

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Old

May 22, 2020 | 01:24 PM

#4

Hobby welder

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Laughing Gas

Joined: Apr 2013

Posts: 1,092

Likes: 34

Thanks all!

just finished up, may or may not have a little fuel in a cylinder. She sounds just a touch funny when I get going.

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Old

May 22, 2020 | 03:35 PM

#5

My4Fordtrucks

Hotshot

Joined: Jun 2015

Posts: 12,811

Likes: 2,431

Quote:

Originally Posted by Binkowski

Just pull the relay for the fuel pumps then they wont pump while you crank.

That is what I wrote but it doesn’t show up. I swear some of my post just disappear.

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