Okay I have a 93 F150 with a 302 regular cab.
Going down the road and started backfiring and missing.
Loaded up with fuel when not on the gas and put on the gas and POW like a shotgun out the tail pipe. I made it home and started poking around.
Changed Dist. cap and rotor button.
new plugs in case one was broke.
in the meantime starte solenoid went out and replaced that.
got number one to TDC and the rotor is 180 degrees off???????????
what happened?????
timing chain slip?????????
help
also does this one have a stell gear or plastic???
any recommendations or procedures??????

 

come on guys gimmes sumptin>>>>>>>

 

SOunds like it jumped time. Make sure it is on TDC of the compression stroke and pull the distributor out and inspect the drive gear at the end. If all is OK there, I would suspect the timing chain and/or gears.

 

ditto

 

How can i make sure it is compression stroke?

 

With the #1 plug removed, have somebody turn the motor over whil you stick your finger in the plug hole. When the piston is on the compression stroke, you will feel air being pushed out the plug hole. When at TDC, the rotor button will also be pointing to the #1 position.

 

Or you can use a breaker bar on the crank pully feeling for air.

Adrianspeeder

 

I am off today, got out there ready to do whatever it took.
I checked the TDC again and I was wrong. It was hitting TDC and the rotor button was past the #1. So I thought about that and loosened the dist. I turned it a good inch so it would come close to lining up. I thought what the heck couldn't hurt. I tightented it down and it cranked right up!!!!!NO miss or backfire YEAHHHHHHHHH. I tried to find a timing mark and pointer. there is no pointer. somebody told me that it may not have one????? But anyway i took it for a road test and TADA it ran great!!! Go figure. It has a slight twinge on acceleration, i'm sure it is not just right on the timing. any suggestions on the timing issue will be greatly appreciated.
I APPRECIATE ALL THE HELP>>>>>>>>>>>>>>>>>>>>>>

 

OKAY,
One more beer is all it took.
Found the timing marks, found the spout.
Dialed it in to 10 btdc and it runs great!!
Never known a distributor to slip and turn gradually but that is what happened!!!!