Injection/Lift Pump Noise????

[Mopar-muscle]

not a good sound , lift pump won't make a nosie like that , i don't think it would still be running if it were the injection pump ...

 

[Big-D]

Let us know what you find out. These strange sounds are of interest to us all. Hope it's nothing major!

 

[David Wheeler]

Puff,

If it sounds kind of like valve ping, mine does it too under heavy throttle while climbing. Please let us know what you find out. I've been curious, but not enough to let the dealer get involved #ad


David

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2001 Ram 3500 Quad 4x4, ETH/DEE

"REAL TRUCKS RATTLE!!"

 

[PUFF00]

I have a noise coming from the engine compartment that I’m worried about. It sounds like a tapping or rapping noise. It is somewhat present at highway speeds with RPM’s around 2000, but is very loud if I floor it going up a hill when on the highway.

I’m worried this is the lift or injection pump. Anyone have this noise too, or know what it might be?


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2001. 5 3500 QC 4X4 6-speed HO 3. 55 black
1998 Jeep TJ black http://www.nm4w.org/members/puffer.htm

 

[highland]

Your shooting in the dark. Get it to a shop. We could speculate for days.

 

[PUFF00]

Good advise. I’m relying too heavily on this site.

 

[Bart Timothy]

Check for loose or lost exhaust manifold bolts.

 

[PUFF00]

Nothing yet. Haven't taken it to the dealer. The truck runs great, so I haven't felt a pressing need to take it in. I'll probably wait until I need to take it in for something else, and ask about this at that time.

I'll post back when I found out something.

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2001. 5 3500 QC 4X4 6-speed HO 3. 55 black
1998 Jeep TJ black http://www.nm4w.org/members/puffer.htm

 

[Guest00]

Had mine to Cummins 3 times and every time the mechanic ( different ones ) said its normal combustion knock. Mine does it all the time in gear, sounds like a top end knock on one cy, heard best by drivers door when open or when driving by a barrier wall.

Note: just replaced DD2's with replacement set of DD2's and knock is not as previlant. One injector, #3, had a big gob of carbon on the tip at the nozzlels, the rest were clean as a whistle. They had 0 miles since 2200 mi trip towing 5th.

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2K, 2500, Quad, SB, 4x4, 3:54LSD, A/T w/ DTT VB, TC, TC SAVER and AUX COOLER , REESE 15k 5th slider, EASLEY BULL BAR, MAAP NERFS, BFG-TA's, 9000's,TORQUS MAXIMUS 505 lbft ECM, stealth DD2's, Bully Dog Boost & elbow, ISSPRO pyro, boost & transmission, Turbo Lifesaver, JARDINE 4", PAC BRAKE, MAG HYTECH TP& DC, AFE filter, GEAR VENDORS OD, TAYLOR WING onboard.
pullees:
#1 y2k ARTIC FOX 5th
#2 22' car hauler w/ 76 Pinto 392cid or 68 Cyclone GT Cobra Jet FB
NRA-LIFE, VFW-LIFE, SoCSA-LIFE, SASS

 

[Shawn.L.Turbo]

So, Puff, what did you find out about this?

Very interested to hear, since mine has made this sound since new also.


Only does it when you put the pedal to the floor.

 

[Morphious]

I had at least something similar, and when I put a fuel pressure guage on my truck, it would not register past the first mark on my guage (2psi). I put the mallory fuel pump on my truck and the pinging went away. It was most noticable when I set the cruise at highway speeds. If it is the fuel pressure problem, the dealership won't have a clue.

Anyway, just my . 02 worth.

Morph.

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'99 2500 4x4 QC Std transmission, Purple (usually Mud Red), 10 Disc Changer, 285x75Rx16 BFG Mudders, Amr. Racing Baja Wheels, Gooseneck hitch, 275lb King Klaw front bumper, Towing/Camper packages. DDIII's, Exhaust, TTPM, Boost Module. Fuel Pressure, EGT adn Boost Guages. Mallory Fuel Pump. AGR Beefed up Steering Box. (fastest farm truck around). And can't forget the hydraulic PigSticker.

2001 Yamaha Raptor, dropped tooth on front sprocket, sand skate II tires on rear, CT Racing Exhaust, Pro Flo Air, Hipo Cam, DG Nerf Bars, DuraBlue 2+2 Axle.

1965 Chevy 1/2 ton Pickup, 350-350hp/2spd powerglide, PS, PB, Disc Brakes on the front, Tilt, Fuel Cell, 3. 73 posi.

26ft Gooseneck Flatbed Trailer, 2 horse bumper pull, Round bale Trailer.

1960 Farmal 340 Diesel Tractor.

 

[PUFF00]

Morphious,

Did you have power degradation with the old pump? My truck seems to run strong.

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2001. 5 3500 QC 4X4 6-speed HO 3. 55 black
1998 Jeep TJ black http://www.nm4w.org/members/puffer.htm

 

[Morphious]

It was a gradual thing, and did not detect it overnight, and only realized that I had a pump failure when I put the gauge on and it would not register above 2psi. Once I installed the new lift pump, I could really tell the difference.

Morph.

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'99 2500 4x4 QC Std transmission, Purple (usually Mud Red), 10 Disc Changer, 285x75Rx16 BFG Mudders, Amr. Racing Baja Wheels, Gooseneck hitch, 275lb King Klaw front bumper, Towing/Camper packages. DDIII's, Exhaust, TTPM, Boost Module. Fuel Pressure, EGT adn Boost Guages. Mallory Fuel Pump. AGR Beefed up Steering Box. (fastest farm truck around). And can't forget the hydraulic PigSticker.

2001 Yamaha Raptor, dropped tooth on front sprocket, sand skate II tires on rear, CT Racing Exhaust, Pro Flo Air, Hipo Cam, DG Nerf Bars, DuraBlue 2+2 Axle.

1965 Chevy 1/2 ton Pickup, 350-350hp/2spd powerglide, PS, PB, Disc Brakes on the front, Tilt, Fuel Cell, 3. 73 posi.

26ft Gooseneck Flatbed Trailer, 2 horse bumper pull, Round bale Trailer.

1960 Farmal 340 Diesel Tractor.