Engine pinging

E

electronix

New Member
Hey guys.

So I was powering up the freeway going up a steepish hill at around 100km/h I was dropping in behind slow traffic so I shifted up to 5th gear. (Usually car goes up in fourth at 100 km pretty easy)

Couple of seconds after I noticed a gap, downshifted to fourth and gassed rather heavily (not to carpet of anything though) with the engine at around 3.5 - 4k revs (Im usually a bit gentler) and at about 110km/h my engine started to ping a bit (didnt sound too bad but I didnt really wanna test it), I quickly upshifted to fifth and let off the gas. Pinging stopped immediately but Im a bit anxious.. could it be a one off or a sign of trouble coming?

Car is at around 108,5xx kms, bought at 105,5xx kms from a respectable dealer. Major service not that long ago (round about 104-105k) with timing belt. Next service scheduled for 112k. Apparently the dealer also services before sale. Last time I checked the oil it was at acceptable level, nice and clean. Temperature was at the usual level slightly below halfway (was driving for about 45m-1hr before I got to the uphill).

I run 95 premium in it. Engine is 4G93. I havent noticed any other problems, no leaks as far as I know, no unusual smells or anything of the sort. Only non-stock part on the car is a 2 inch catback with lukey ultra flo muffler.

What should I do?
 
As far as I could tell it came from the engine. Sounded exactly like if you stuff up a start in a manual and the engine pings a little before you correct if that makes sense. I know Ive gotten a similar pinging when I didnt give the car enough gas on an uphill start (not a stall choke though).
 
OR your going up a hill in 4th could have somthing to do with it? revs being to low for the gear you was in & thus the engine pings/shutters my old lancer use to do it aswell
 
Chocko said:
OR your going up a hill in 4th could have somthing to do with it? revs being to low for the gear you was in & thus the engine pings/shutters my old lancer use to do it aswell
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100 ks in 4th i don't think the revs will be too low.

Check oil
 
mdclear said:
Chocko said:
OR your going up a hill in 4th could have somthing to do with it? revs being to low for the gear you was in & thus the engine pings/shutters my old lancer use to do it aswell
Click to expand...

100 ks in 4th i don't think the revs will be too low.

Check oil
Click to expand...

nm i forgot this is a 4g93 not a 4g15 lol
 
Chocko said:
OR your going up a hill in 4th could have somthing to do with it? revs being to low for the gear you was in & thus the engine pings/shutters my old lancer use to do it aswell
Click to expand...

Aaron is right, high load and low rpm will make it ping.

But in saying that you have a stock 4g93 running on premium, so there is no reason it would ping at all unless its a very bad batch of fuel.

I'm going to go with it wasn't real detonation, maybe something else like an exhaust leak / crook engine mounts / something else
 
run 98 RON if ur worried, but i doubt its pinging in the engine, probably just exhaust leak, possibly not enuf fuel being pumped in because of a blockage, fuel filter mebe
 
Ah K thanks for the replies guys!

Is there any problems with holding off until next service?

I could do the oil/oil filter myself but if its a fuel pump I dont really remember/know how (probably had it explained to me in basic mechanics course but I cant really remember).

Gave it a bit of gas today and doesnt ping at 5k revs on flat so Im assuming it was just the hill and my lead footedness making it ping. Is it likely it could be the ping sensor??? Does the lancer have one? :-S
 
ping sensor = knock sensor i assume? yes ce's have them

if its pinging and it doesnt sound good dont hold it off till next service!
ur engine could be well fked by next service, go see a mechanic sooner than later if it sounds bad
 
haha check oil.. what is the reasoning for this... pinking or pinging engine has nothing to do with oil and everything to do with fuelling, timing and engine load..

Pinging, pinking, knocking etc, occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front. The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. The peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive (especially if you have hypereutectic pistons).

It should not be confused with pre-ignition, which is similar to run-on, where the cylinder or head becomes so hot (or incandescent) that it detonates without the aid or intervention of the spark plug. This can be due to high carbon deposits in the engine... usually flushing with fuel system cleaner can assist.
 
Actually, a mechanic can chime in here and tell me where I am wrong, but pinking CAN be oil...

Pre-detonation of oil droplets in your combustion chamber to be precise. But this would mean your oil control rings on your pistons or your valve stem seals are buggered..


But that said, just adding oil does nothing to solve that issue.... preposterous advice.
 
i have heard a engine with next to no oil it, ping when it was under load.
 
it was probably running too hot.. oil assist lubrication and cooling...

I have heard an engine pink really terribly because there was not coolant in it after the water pump failed.. the incandescence of some engine parts made the car pink...

Carbon deposits in the head are often to blame...

Timing, too, depending on the model, does this one have an adjustable dizzy?
 
tryg said:
haha check oil.. what is the reasoning for this... pinking or pinging engine has nothing to do with oil and everything to do with fuelling, timing and engine load..
Click to expand...
But the low amount of oil means that oil temp rises, causing hotter engine running temp, causing detonation?
 
I think an educated guess would suggest if overheating was an issue, then it would more than likely be a crook cooling system... Would have been mentioned.
 
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