Engine Pinging & Oil Consumption

jrose62
5

Asked by Oct 19, 2009 at 12:38 PM about the 1999 Dodge Ram 1500 2 Dr Laramie SLT 4WD Standard Cab LB

Question type: Maintenance & Repair

I have a 1999 dodge ram 4x4 with a 5.9L engine. This truck came from nevada and I live in the northeast. I must run super enleaded fuel or the engine pings something terrible. It also consumes a qt of oil every 150 miles. Doesnt smoke or leak. The truck has a 130K miles and was used for towing, I say this because it has the 5th wheel hitch. Someone has suggested that the computer may need to be reprogramed due to the climate difference between the midwest and new england? Does anyone else have any suggestions.
Thanks

7 Answers

Chase Sutherland
6,175

try getting some heartland oil stop leak. that stuff works miracles.

Adam Morgan
6,965

A few things come to mind, but the very first thing is... 1) Is the check engine light on? It's a OBD2 vehicle which should have fair degree of diagnostic ability, use it if possible... 2) Because it's an OBD vehicle you almost certainly don't have to deal with reprogramming the computer as the stock setup should self correct for variations in climate. Unless the P.O. flashed the device or has a standalone, that eliminated the functionality of the system. 3) If it's pinging with anything but premium and you're sure of the gas quality it may be a timing issue. I'm not familiar with the engine so I don't know if it's electronically controlled or distributor controlled. If it's the later take it to a shop and have them check the timing. It may have gotten advanced somehow. 4) It's either burning oil or leaking it somewhere, try to figure out which one as it may be the source of some of the problems. If it's not leaking I'd pull each spark plug one at a time and see if any of them look substantially fouled. --- Well that's what jumps to mind immediately ---

1 out of 1 people think this is helpful.
Gary Green
45

Don't know what your oil consuption problem is, but the spark knock is simply Dodge. I had a 2000 Dakota with a 3.7 was the same way, had to run supreme fuel or it knocked. Friend of mine had a late 90's Ram with the 5.2, had to run supreme as well or it knocked. I have a 2005 Ram now with the Hemi and even that works better with a better grade of fuel. Dodge's need good fuel simple as that.

1 out of 1 people think this is helpful.
Chase Sutherland
6,175

My 05 300C hemi runs best on shell v-power(93 octane). I get about .5 mpg worse with 89 octane. Yours the same?

Gary Green
45

I don't remember exactly what it was now, was a noticable difference though on mpg. Even before I figured it out I could tell a difference between regular and supreme. Even just usin the middle grade of fuel made a noticable difference. Was like 1-2 mpg better on the highway at 80 mph

2 out of 2 people think this is helpful.
Dan Connell
9,995

the computer will relearn its environment in about 300 miles its not the computer causing it, now dont ask me how the ping works but i know why it goes away when you use the higher octane gas, 93 octane burns cooler than 87 octane fuel your engine is timed to run at a specific octane of fuel 87-93 is the norm, now being that its from the hotter climate the truck may be timed to run with a cooler burning octane to keep excessive engine heat down thus running the low grade gas will make the engine ping knock and if ran for too long eventually detonate. now the fact the the vehicle is using excessive oil is because the rings are shot, most likely from 130k miles of towing with high RPMs in the high heat out west.

3 out of 3 people think this is helpful.
420para
85

I heard there was a technical service bulletin regarding that same description. Ping + oil consumption = intake manifold gasket.

4 out of 4 people think this is helpful.

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