high rpm stalling
 

Went out today and ran for quite a few hours with no problems, running no more than 3500 rpm. Dropped the wife and kids off and went to have some fun and after a couple of hard runs running close to , if not at WOT, the motor would quit for a few seconds and then start right back up (like it was hitting the rev limitter). This happened at different rpm ranging from 4000-4500.
I have a 502/415 EFI Magnum that is pretty much stock.
Where should I begin?????
Any help appreciated.
Joe

Re: high rpm stalling
 

Check fuel delivery [gas filter]

Re: high rpm stalling
 

That was my first thought, but I thought that if it was a filter problem it would seem to be more of a "sputtering" performance and would not seem like I'm losing "total" power of the engine. Or, is this what would be more common in an EFI?

Re: high rpm stalling
 

Ck the main engine plug conection?

Re: high rpm stalling
 

Had a cracked fitting in the fuel line upstream of the fuel pump. Must of been suckin' air. All better now.
Thanks
Joe

Re: high rpm stalling
 

Cool . I bet that was a hard one to find ??

Re: high rpm stalling
 

Just happened to be tightening things up and when I came to that, it just seemed to tighten and tighten and tighten and tighten. I can't beleive that there was never ANY fuel leakage. I'm glad it wasn't on the downside of the fuel pump. That could of been bad!!!!!

Re: high rpm stalling
 

If it is Mercs TPS system, replace the filter on the bottom of the high preasure pump. Located in the TPS tank. This will fix your problem. I had a 97 baja & had to replace the filters just about every year. :D

Re: high rpm stalling
 

It is agrivated by rough water