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#4116538 - 07/28/21 11:47 PM Stripped fuel pump bolt hole
ReverseEngineerz Offline
Stranger

Registered: 05/09/21
Posts: 6
Loc: United States
Hello,

I previously posted about fuel pump pressure, and replaced the pump, which fixed the hard start problem.

It turns out the pump had been previously replaced in 2009 with a Ford pump.

I was paranoid about stripping the bolt holes, so I bought an inch pound torque wrench, and torqued them first to 20, then 55, then 89 inch pounds.

One of the bolt holes gave out before I got to 89. I backed it out, and tried again, and it continues to weaken.

Does anyone have any creative ideas on how to remedy this?

Thank you.
_________________________
2000 Crown Victoria 79,000 miles (As of July 2021)

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#4116620 - 07/29/21 07:32 PM Re: Stripped fuel pump bolt hole [Re: ReverseEngineerz]
Blu Offline
Climber

Registered: 11/27/07
Posts: 584
Loc: Milwaukee, WI
Tap for next size bigger bolt.
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00 06 09 PI

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#4116624 - 07/29/21 07:42 PM Re: Stripped fuel pump bolt hole [Re: ReverseEngineerz]
ReverseEngineerz Offline
Stranger

Registered: 05/09/21
Posts: 6
Loc: United States
Thank you Blu, that's what I'm going to try!
_________________________
2000 Crown Victoria 79,000 miles (As of July 2021)

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#4116640 - 07/29/21 08:41 PM Re: Stripped fuel pump bolt hole [Re: ReverseEngineerz]
ReverseEngineerz Offline
Stranger

Registered: 05/09/21
Posts: 6
Loc: United States
...and it's done!

The original bolt was M6.

I went to a 1/4-20, taped my tap just shy of hole depth so I wouldn't go too far, and then doubled up on the washer to keep the bolt from galling against the unthreaded portion.

I took them all to 60 inch pounds, and I'll see how it does.

Not certain the 89 in-lb figure was correct since it caused one to strip. Don't want to risk that again.

Thank you!
_________________________
2000 Crown Victoria 79,000 miles (As of July 2021)

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