Fixed possible V10 plug problem early... - Diesel Forum

robsd · 02-08-2003, 01:24 PM

I posted this on another site and wanted to make sure you guys saw it as well....

I finished changing the remaining 6 plugs. These would be the 3 on each side closest to the rear of the engine. I decided to do the passenger side first, get the hard part over. No problems everything looked OK.

Then went to the drivers side. I changed my routine for these. I removed the injector and plug wires and pushed them back. Then removed all the coils. This way I could blow everything out at once. While blowing out 3 and 4 on the drivers side there was a cloud of rust. Tons of it. The boot from the coil also had some rust stain on it. These 2 plugs were very loose. No blowby was occuring but it was looking close. The 5th plug back was ok.

You see all the corrosion around the plugs. My only conclusion is water could have gotten in there at the factory and the engine sat for a while. The boots on the coils looked like they were sealing ok. Water would have to been in there for a while. I always run my engine after I clean it to boil off the water.

Rob

pic1
pic2

SpOOk · 02-08-2003, 03:13 PM

Wow they were very rusty, thanks for the information. [img]/ubbthreads/images/graemlins/smile.gif[/img]

How long did it take you to change them out?

robsd · 02-08-2003, 06:16 PM

Hey Spook,

When I got the plugs I did the front 4, that took 15-20 minutes. The rest probably took 45 or better. I'm fairly handy with tools cuz I use to make my living pulling wrenches. The 2 sides are just about equally tough. The drivers side looks easier but you have to remove more stuff to get to it. The back one on the passenger side was of course the hardest but still not that bad. There is a water line that's in the way, a shorter extension and a long reach rachet and your good to go.

Rob

Mastertech · 02-08-2003, 11:58 PM

I have seen V-8's with this problem recently also, 1 had been to a detail shop sometime before and the other had been driven though some high water in Houston. I dont think the boots on those coils seal all that well and then the water just stands in there. I have also had several vehicles with a slight coolant leak from the heater hoses and the coolant will drip on the passenger side rear plugs and run past the boots and cause a misfire.