Truck started to miss again today. No engine light but when my truck misfired before the code came up p0304. So i pulled #4 plug. It was covered in coolant. So i began looking at all the heater lines but i can't find a leak anywhere. Felt around all connections and clamps, nothing wet. Where else should i look? Should i look while my engine is cooled down or running? Thanks!

 

Well there not going to leak when your looking at them off course. I don't know if they are, you should be able to denote this by looking on top of your COP for evidence of such. If so , do not cut and rehook lines , have to replace them, I've purchased recently and they were like $13 a piece from the auto parts supply.
Hope it's not a head gasket (water jacket) - well heres a pic of the lines I have for some reason lol

 

Still stumped. If it was a head gasket would coolant be on more than just the #4 plug? Truck doesn't smoke at all. I will be changing the oil to see if coolant is in there. Any other ideas? Thanks!

 

Check it on the dip stick as well - you sure it's not comming from the heater core feeders. those rubbers I posted above? At least answere the idea's - the way you posted the question is that you didn't know if it was - now you saying it's not , which means I just wasted my time trying to freakin help ..

 

I said before that i couldn't find any leaks on the hoses. I checked all of them. I'll check the dipstick also. It looks like there is some rust though behind the COP maybe the coolant sits there but i am still searching where its coming from. Thanks.

 

Whatever I think your lines are leaking - theres allot heat in that area , with heat you get expantion and contraction , those lines leak when the fluids hotter than hell - the rubber softens around the clamp on the inside of the hose , this is usually why it's hard to detect. The heat dicipates the fluid . If the plug chamber had fluid from the leak , even a little bit , well, there you go - Did U blow the chamber out with compressed air before rremoving the plug - even the haynes manual say's to do that - if you did it right then maybe you wouldn't be having a problem.

Replace your lines and replace #4 coil - at least vacume out the cylinder 4 that you let all the crap fall into.

 

Yes i blew out the chamber. Ill replace the hoses and i am waiting for 8 new coils in the mail. Thanks jbrew didn't mean to get you all worked up.

 

Okay , that's cool Did you get the COP deal from Kevin at Global Auto?

 

Yea i did. just the coils though I have Motocraft Platinum plugs already. Thanks for the info on Global automotive. That place rocks!

 

LOL, No prob , was wondering how you found it haha, that's cool