newbie needs help...AGAIN

[rollinblacksmoke]

heres my problem. 95 psd skipping like when it runs out of fuel(but its not) had fuel leak, replaced pump and small lines leak seems to be stopped, but it started the skipping just prior to replacing pump. i know ....pull codes, but no one can get me straight on that (its a 95 and is supposedly the second engine so i dont know exactly whats in it, therefore no ones scanners will work) so i cant pull codes???? truck is not smoking or anything else, just skipping injector(s) ? how do i check it out. no one around here wants to mess with a 95 but i like it and am having withdrawals PPLLLEEEEAAASSSSSEE HELP!!!!!!!! thanks chuck

[kx592]

Well for starters change your fuel filter. check your air filter. post back, i bet the fuel filter will do the trick.

[rollinblacksmoke]

thanks for the reply, but almost new fuel filter, and air filter is also good, also i have been running a b-20 blend of bio-diesel for about the last 5k mi.

[Rantheman]

to be honest the b-20 could have had a small effect on your motor but I gots no info to back that up with.

[kx592]

sounds to me like you need to change you B number.

[gbear]

Is your truck stock, or does it have any mods? Does it lightly miss or fall on its face. Is the miss at all speeds or just under load? Is it an automatic or standard transmission?

Jim

[rollinblacksmoke]

hey gbear, the truck is stock as far as i know ,other than exhaust. i put a 3in. dp into a 4in. straight pipe, muff and cat delete , no chip or anything. also know engine has been replaced, and there is a ford sticker on radiator core that shows something it looks like pcm reprogrammed in 98? but cant make anything else out on sticker. have been trying to locate mechanic/shop that did the work but no luck so far. it misses at a constant from idle up to highway speed, it is an automatic. thanks

[gbear]

If it a constant miss I would check the wiring to the injectors. make sure the plugs are all made and take an ohm meter to the connectors to see if any are open or shorted. You may have a bad connection under the valve cover. You can use an infarade thermometer to see which cyclinder is dead (it will be cooler than the rest). I hope this is of some help.

Jim

[rollinblacksmoke]

i didnt think about the thermometer, but that makes sense, i'll try to locate one in the next few days and try that (work is a little hectic right now good problem tho), thanks chuck

[SMKSTAX]

That under valve cover harness is a good thing to check for sure.