Someone else's truck.
Wtf
- Thread starter SRT2SLOW
- Start date
Someone else's truck.
seethrough
Member
Someone drop it on the floor before installing it? Doesn't look like the piston hit it but you never know. Is compression good on that cylinder?
tim simmons
Full Access Member
Things that make you go hum¿
It had bosch platinum 4's in before i did a tune up. 6 out of the 10 were messed up. Now with new oem plugs it did the same . No knocking and compression is good in all 10 cylinders. 91k all stock. It only does that at wot.
Someone else's truck.
Cheap (or expensive) way, to get that lumpy cam sound!:chain:
seethrough
Member
Carbon buildup on the piston top? How many miles? You might have to shim them so they get more clearance.
6speedquadcab
NorCal SF Bay Area
Is that Sergio's truck again?
Yup......
Im gonna order the shims on line. We couldn't find them locally
Sir, I would say your friend is experiencing detonation. I have had this happen in the past, and this was the cause.
Hope this helps...
Hope this helps...
10-1=9
Full Access Member
Do you have access to a bore scope? Would try & look inside plug hole for damage. The missing pieces of plug worry me.
505 V10
Has Left the Room - Banned from VTCOA!
There's no way I'd take 91,000 Mile motor to wide open. Not unless I was looking for a reason to tear inside it.
seethrough
Member
i was thinking last night and this crossed my mind. With this mileage you could have dirty injectors that are causing a lean condition leading to detonatation. I would take the truck to a dealership for a fuel injector flush or at a minimum run a few cans of the fuel additive cleaner to the tank and change the fuel filter.
10-1=9
Full Access Member
You will need a 1/2" spacer to keep that from happening.
NukeGM/Ford
Active Member
weak rod bolts stretching, allowing the piston to travel to far at high rpm, next step is kablooey
Psycho1122
Full Access Member
The Rod bolts in these engines are not weak. No rumors need to get started.
NukeGM/Ford
Active Member
not starting a rumor, the ones in that truck could be sub standard, manufacturering tolerances out of whack. just because 10,000 sets work right doesn't mean 1 set can't fail.
either something (rod bolt, rod, piston pin) is allowing the piston to go too far into the combustion chamber OR the spark plug is too long (previous set and new set) or someone tried silicone for head gasket or super thin one (which i don't see accounting for that movement)
you really thin detonation caused the strap to be bent one ALL the pistons without really eating up the rest of the spark plug?? could be i guess
Apparently you don't read much on this forum... There are plenty of guys who have well over 91K on their motors and run them hard without issues. Some even spray generous amounts of nitrous with over 100K on the clock without issues!!!
E, can we see a high resolution picture of the tip of the spark plug?
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