94 F150 4.2L will not run

mmason · 09-07-2009, 08:28 AM

THIS IS A PROBLEM THAT IS STUMPING EVERYONE! It started out as a fuel pump problem but now I'm not sure The truck has broken three crankshaft pulleys. when I put on another, it will start run about 1.5 days and breaks another. and of course its out of time as far as the computer thinks. Also when it does run the exhaust manifolds glow red hot. I believe indicates lean fuel. Help Please. thanks mmason

bradrhale · 09-07-2009, 10:07 AM

broken 3 pulleys?? do you have cam bearings out in it causing a death wobble?? is it breaking teeth or the whole pulley?? does the crank pulley line up with the crank pulley??

Towtruck · 09-08-2009, 06:31 AM

So what exactly have you done so far to the engine?

eponator · 09-08-2009, 01:41 PM

I agree with crab, check the angles and make sure the cam(I think) pulley lines up with the crank pulley perfectly. Are there any strange sounds that might depict a worn out bearing? Can you post pictures of the broken pulleys so we can see what kind of breakage you're getting?

We need more info in order to help you further.

09-07-2009, 08:28 AM	#1
mmason Junior Member Join Date: Sep 2009 Posts: 1	94 F150 4.2L will not run THIS IS A PROBLEM THAT IS STUMPING EVERYONE! It started out as a fuel pump problem but now I'm not sure The truck has broken three crankshaft pulleys. when I put on another, it will start run about 1.5 days and breaks another. and of course its out of time as far as the computer thinks. Also when it does run the exhaust manifolds glow red hot. I believe indicates lean fuel. Help Please. thanks mmason

09-08-2009, 06:31 AM	#3
Towtruck Senior Member Join Date: Aug 2009 Location: Ft.liqourdale, FL. Posts: 95	So what exactly have you done so far to the engine? __________________ ASHES TO ASHES, DUST TO DUST, IF IT WEREN'T FOR CHEVY'S MY TOOLS WOULD RUST

09-08-2009, 01:41 PM	#4
eponator Senior Member Join Date: Nov 2008 Location: West Covina, Ca Posts: 363	I agree with crab, check the angles and make sure the cam(I think) pulley lines up with the crank pulley perfectly. Are there any strange sounds that might depict a worn out bearing? Can you post pictures of the broken pulleys so we can see what kind of breakage you're getting? We need more info in order to help you further. __________________ '99 F350 5.4L crewcab Longbed

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09-07-2009, 10:07 AM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,030	broken 3 pulleys?? do you have cam bearings out in it causing a death wobble?? is it breaking teeth or the whole pulley?? does the crank pulley line up with the crank pulley??