Advice. Think my 2F is toast (1 Viewer)

Joined
Dec 1, 2017
Messages
139
Location
Sutter Creek
Backstory:
1971 FJ40 with a new to me 2F (not rebuilt) which ran well. Approximately 120k miles. My Holley Sniper was having issues, so I sent it off to Holley for repair. Turns out the harness was bad. So I reinstalled the Holley Sniper and harness.

Go to start the rig, small backfire and dies. Start it again and I hear a rhythmic thud noise, which sounds like it’s coming from the block. Engine ran like this for maybe 2 second before I shut it down.

Pulled the valve cover and nothing inconspicuous is apparent. Valve tightness seems appropriate and no obvious deformities to the valve push rods.

I have yet to drain the oil or compression check the cylinders as I am devastated but am expecting the worst.

Any other advice or recommendations are welcome. Thanks
 

graham5david

SILVER Star
Joined
May 3, 2016
Messages
1,381
Location
odessa, tx
If it was running good prior to pulling the sniper I doubt anything happened by trying to start it with the fresh unit. Did you mess with the settings in the sniper or timing or plug wires?
 

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