Greetings from north of the border my friends! I am new to this site and this is my first post so hopefully I get it right.

So I bought my 1987 F150 XLT 4X4 (4spd) about two weeks ago and haven't had any issues with it so far... until now. As soon as I got it I did a full tune up. Changed plugs, cap, rotor, fuel filter, new battery, sea foamed it, fuel filter, ran a bottle of fuel stabilizer through it, new pvc valve, cleaned the throttle body, oil change, ect, ( all the usual things).

Was running fine up until two days ago when I was driving down the highway doing about 90km/hr in 4th when the truck suddenly lost power, sputtered and died. Tried to start it again and it will turn over but not start.

So I get a nice expensive tow home and start to diagnose the problem. It is not a fuel issue. I can hear the pumps coming on, and fuel is coming out of the fuel filter so I cross that off the list.

Next I check for spark. No spark at all. So I run some tests. Battery is putting out 12V, about 10 when cranking. The solenoid is getting power and putting out power. No visible damage to any of the wiring, and all the grounds look good.

Next I just went ahead and swapped out the coil thinkin that could be the issue. Didn't work. So I preform some more tests on the old and new coils. Both are grounded and having voltage pass through them. Next I take the TFI module off the distributor and check for resistance. Everything still checks out fine. Now I am thinking that the only thing left could be the PIP in the distributor. So instead of taking the dist apart and screwing around I go ahead a get a brand new dist and throw it in.

Now im stoked and thinkin that I finally fixed my truck and go to start it up and.... no spark %$#@%. It still turns over but no start.

Sorry for the long post but im trying to provide every bit of detail that I can. When I say I tested all the components I mean I REALLY tested them. I did both tests from the Haynes manual and from various sources off this site.

Anyone got any suggestions? I am almost at the point of getting it towed to the shop and throwing money at them which I really do not want to do.

One thing that may help is that a day before this happened I degreased the engine and VERY carefully sprayed it off with water. In the process im thinking I may have damaged something?

 

You didn't say what engine you have. You did say TFI module so that means you have a computer. Have you pulled the codes and see what it has to say? All you need is a testlight to do it. Some more info is at this site on how to pull codes. Fuel Injection Technical Library