That would only affect power and spark knock under load.
That would only affect power and spark knock under load.
wrist pin knock will go away as RPM's go up. Piston slap is actually an option is a GM vehicle. The more you pay for one the more you will get.....
2009 YUKON DENALI,BLACK ON BLACK, LS3, Dynomax 4" cat-back, VARA-RAM INTAKE, KOOKS LT's, MSD IGNITION, LS VVT hot cam, ZO6 springs, HP tuned to 421awhp, 12.54 at 108mph on 24's.TUNING FROM THE DARKSIDE.
06 KAWI BRUTE FORCE 916cc 6.80's in the 1/8th. ALL MOTOR. New found drug addiction is getting "HER" into the 5's. "EVER HAD A QUAD TAKE YOUR MONEY?"
If it is a wrist pin, I shouldn't need a complete rebuild correct? Where are the wrist pins located?
At the top of the connecting rods, they hold the pistons on.
Guys, it couldnt be from a bad steering pump could it? Mines bad and when the power sttering fluid levels low it knocks harder it seems filled it back up today and its not as bad??? any thoughts?
Hello,
I have a knocking sound in my engine as well, it is a 2003 GMC Yukon with the 5.3 liter engine. HOWEVER, it only knocks for a short while when it is cold. What could be the problem? Could it be a valve lifter?
THANKS in advance, you guys are great!
2005 GMC 2500HD SLT 2WD Crew-Cab Short-Bed, 6.0Liter, 4L80e, 11.5" AAM locker w/3.73 gears...
2003 GMC Yukon 2WD, 5.3Liter, 4L60e, 3.42 gears...
That sounds more like piston slap.Originally Posted by johanh13
Step 1. crus at it.
Step 2. get a hammer.
Step 3. torch it.
That sounds serious, how much longer will it go? It has only 150,000 miles on it...
2005 GMC 2500HD SLT 2WD Crew-Cab Short-Bed, 6.0Liter, 4L80e, 11.5" AAM locker w/3.73 gears...
2003 GMC Yukon 2WD, 5.3Liter, 4L60e, 3.42 gears...
Very common. Dont worry.
2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s
2004 Buell XB12s
Good advice Greg.Try that first. If that doesn't cure it--I would suspect the oil pump. How is your oil pressure? Put a mechanical gauge on it and see what you get. If its not at least 38-40 psi at idle, that is where your problem is. If your pressure is ok, then try changing weights of oil.
No need to worry. Run it that way for another 150k miles.
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
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