MarkV Posted June 1, 2022 Share Posted June 1, 2022 So on my 48 Lincoln I had yet another fuel pump fail. I go through them like toilet paper on this car, 3 in the last 8 years. So I put a new one on and still nothing! Ended up also being the fuel pump rod that was broken off as well. Replaced it and it works again! I have never had this problem with any of my cars. The engine is a 51 mercury flathead which I absolutely love and it’s been in the car since the late 60s. Link to comment Share on other sites More sharing options...
TerryB Posted June 1, 2022 Share Posted June 1, 2022 Wonder if the rod pushing on the pump arm is defective? Perhaps too long? Link to comment Share on other sites More sharing options...
Terry Bond Posted June 1, 2022 Share Posted June 1, 2022 Gee, looking at your title I thought you'd be talking about the latest issue of a magazine. Terry 1 Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 1, 2022 Share Posted June 1, 2022 One of the many bad design flaws of this engine was putting the fuel pump on top of the motor where it has to lift the gas rather than push it. This makes them prone to vapor lock, combine with a hot running engine and today's vapor prone fuels no wonder the pump can't cope. Solution may be an auxiliary electric pump back under the gas tank. Link to comment Share on other sites More sharing options...
Grimy Posted June 1, 2022 Share Posted June 1, 2022 I think I recall that oversize (i.e., longer than normal) pushrods were available in the aftermarket for these engines, perhaps to compensate for wear of cam lobe or to get more diaphragm deflection. We Cheap Charlies used to glue a washer into the cap to effectively provide a longer stroke. You might want to check a Ford/Merc V8 supplier to see if they offer two different lengths of pushrod. 2 Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 1, 2022 Share Posted June 1, 2022 Have heard of welding a worn pushrod and grinding it smooth to restore the length. Link to comment Share on other sites More sharing options...
MarkV Posted June 1, 2022 Author Share Posted June 1, 2022 This one actually snapped the lower part which was crazy. I’ve had hard starts for years thinking this was a long term issue Link to comment Share on other sites More sharing options...
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