coolant leaking at coil pack

[watsonj8]

Have a 99 expy 5.4 liter. At the number 3 coil pack collant is coming up when you idle the engine up. The coil pack is on and i increased the rpm and coolant flowed vertical from roughly the back right side of the coil pack. What could it be? No white smoke from exhaust pipe, antifreeze is fine, and engine oil level is good with no bubbles. Ford dealer said it was a cracked head

 

[KWT2000]

very well could be cracked head

 

[rburch]

Dealer could be correct! but you would think that it would leak into the cylinder also!

 

[toms89]

Heater hose are right in that vicinity. Make sure there is not a pin hole in one. Think that would be more likely than cracked head. There is also a coolant passage on the back corner of intake. If you rule those out as possible source that leaves only the heads.

Can you make video and post??

 

[Expeditionary]

ics-****:

THIS THREAD IS USELESS WITH OUT PITCHERS!

lol JK, its more likely a leaking coolant hose than a cracked head... update.

Welcome to the forum and hello from FLA

 

[BARRMAN]

I don't think that is the engine head. I Had a similar issue on my 2000 expedition where the manifold, which is plastric, cracked and fluid was slowly leaking onto the top of the engine and then leaking into the spark plug holes. That was about $1000 repair.

 

[rewarder]

Same thing happened to me when I went to pick up my 99 Expy in SoCal last weekend. the engine would "stutter" or miss at around 55 -70 mph. It seemed like it was missing like a distributer cap or wires were bad. But since my 5.4L Triton has those coil packs, we found out that the heater hose on the passenger side next to the firewall had a small leak and was dripping onto one of the coils on the right side (passenger) in the back. The coil connector had some rust in it. We replaced the bad coil and replaced the heater hoses. Those heater hoses are tricky because they use proprietary connectors from ford so there are no hose clamps. The heater hose costs a few bucks but worth taking a look at. The leak was soo small that it virtually undetectable. Those coils in the back are hard to get to also. - Hunter

 

[panda24619]

its the heater hose. same thing happened to me. very common! happened on coil #4 for me. but get the pin hole fixed and your good to go. and change the coil too. forgot to say that.

 

[Marv02]

I just got done pulling and reinstalling the intake it not a bad job I also pulled the Heater tube out and pressured tested it with some air pressure and water checked out to be good.

My leak was a bad intake gasket cost gasket from Napa $50.00 $30.00 in coolant and about 7 hours of time but It took me a couple day I was not in a hurry just worked on it after work for a hour or two until it was done.

The hardest part at removing and reinstaling the stupid bolts on back of the Passenger side head that hold the heater tube on.

 

[rewarder]

I can imagine, that thing is packed in there. I was hoping it was your heater hose. Easy fix. Glad you got it worked out.

 

[watsonj8]

Head

It was a cracked head. After removing the head I looked in the cylinder hole where the sparkplug goes. Then I seen the crater of a hole. Have changed the head out and I am having trouble retiming the engine. When I first installed the timing chain the chain jumped. But, the million dollar question is, could the drivers side chain jump even though I never removed it?

 

[watsonj8]

was a cracked head, know much about re-timing the engine, think my timing jumped. or should i say i know my timing jumped. I never removed the drivers side timing chain, could there be a chance that the drivers side jumped?

 

[watsonj8]

never leaked into the head, it was a good size hole in the cylinder hole where the spark plug goes

 

[Leftyg3]

hi there fellas,
i noticed yesterday that there was steam coming out from under the hood and upon closer inspection i discovered that water was leaking from a metal tube that connects to a rubber hose right next to the spark plugs on the front passenger side of the engine

does anyone know what this piece is called or how to remove it? ive attaced an image

thank you for the help

 

[Marv02]

Know wounder it's leaking you need to clean it every now and then.

hi there fellas,i noticed yesterday that there was steam coming out from under the hood and upon closer inspection i discovered that water was leaking from a metal tube that connects to a rubber hose right next to the spark plugs on the front passenger side of the engine

does anyone know what this piece is called or how to remove it? ive attaced an image

thank you for the help

 

[Leftyg3]

that metal tube is broken right at the base. i don't think cleaning would have saved it from that haha

anyway, does anyone know how to remove this?
my guess is that it is not threaded and just held in place by sheer pressure but id like to be sure before a break something else!

 

[Leftyg3]

sorry double post

 

[2000eb]

i have seen more problems coming from cleaning engines especially these 5.4 liters. water gets under coil pack and causes all sorts of issues. these 5.4s run better clean. if you build up 350 or 302 for a toy ya keep it clean but if you buy one of these trucks and its already dirty your better off leaving it alone.

 

[Marv02]

I spray my engine and wipe off it's a 5.4 off about every 6 months or so I have to drive across a dusty dirt road that turns in to mud when it rains, to get to my house so far I have not had any issues keeping it clean.

As for my Toy car the motor get washed off about every other month to keep the polished Valve cover cleaned and polished every other week.

It easy to keep it clean but once a car gets grime and dirt all over it that when yoyu have to wash the Do Do out it and start getting water in places it should not be at.

Oh Ya my Toy car has a lot of electrical conection all over the motor also It's also fuel injected never have any problems with it either.

i have seen more problems coming from cleaning engines especially these 5.4 liters. water gets under coil pack and causes all sorts of issues. these 5.4s run better clean. if you build up 350 or 302 for a toy ya keep it clean but if you buy one of these trucks and its already dirty your better off leaving it alone.

 

[Leftyg3]

well, since there seems to be no information on this metal fitting, i just went ahead and used some jb weld on it.
ill let you know if it works....