Have a 93 ford f 150 4.9 inline 6 shut engine off and wouldnt start up turned dist cap and got it to start but runs like its not timed right so put new plugs wires rotor cap button sensor and dist also fuel filter fuel pressure reg o2 sensor heat sensor ign module new computor some time it has a funny smell we have also checked timming gears and is all good weve top dead centered it to death and you still have to turn dist and can get it to run and even drive 80 miles an hour but it misses and when you try to punch gas it still lacks power unless you baby it has anybody got any ideas lori

SOURCE: engine performance

It can be also the oil, so chack it...

SOURCE: '86 F-150 5.0 EFI

it can be either bad gas smell the gas if it smell like tekila or alochol, that means the fuel is contaminated with e-85
or if fuel smells ok, check also your last receipt for last fuel purchase and make sure you have not buy any e-85, also check for maf or map sensor and unplug it, if any changes the sensor is bad, also if you have dual fuel thank check the filter in the fuel separator, it is a big plastic hosing where all the fuel lines atached together.

Colin Stickland

• 22516 Answers
• Posted on Jan 10, 2009

SOURCE: When accelerating my 1988 2.3 Ford Ranger will intermittently mis

got me thinking this one??done a compression test ???valve seats i think as cars before 92 didnt require a cat,if engine was designed without stelite coatings on the seats as it ran on leaded fuel.but with the introduction of unleaded fuels some cars sort of got missed in the changeover.but this is a ford and i know that when i worked in the factory in 1972 evan then all engines produced had stelite coatings but that was europeon built engines.Well enough history do a compression test,and if need be grind the valves in and fit new springs and seals it cant hurt

SOURCE: I have an '88 ford f-150 302. I changed spark

I have seen this before working for Ford...it really came down to removing the exhaust pipe infront of the clogged catalytic convertor and road testing it to confirm that the convertor was clogged.. So if you can loosen the pipe in fron of the convertor so that the exhaust can escape with out going through a possibly clogged or melted convertor and if it runs with power thats great other wise diagnostics for the engine will be needed to be done.

SOURCE: 1989 ford aerostar will not start when engine is warm.

AM temp 55 car started but stalled out after starting. Attempted to restart and did not hear fuel pump. Tried again and then fuel pump kicked in. Checking fuel pump inertial switch and fuel pump electrical supply.