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My diesel is pinging??

General Tech Talk

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My diesel is pinging??

Post by Syzygy »

My 2.4 diesel seems to be pinging much the same as a petrol motor would...

I'm thinking this can't be good for it, and i have no idea whats causing it.

It seems to only happen under load, and once the revs get over about 2300. Its not as loud as a petrol ping, but definately there. I've filled up a few times, once with bp diesel, and it's still the same so its probably not the fuel quality unless its all gone bad.

any ideas?
1986 2L-T Bundera
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Post by mechtech »

pinging can be caused by a few things, incorrect inj timing(anyone been playin?) belt/chain worn (many k's?) or pre ignition, will never know can try some fuel cleaners to try knock off carbon deposits.
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Post by eliteforce32 »

mate remeber the ole 2.4 is renowned for their week bottom ends :twisted: , so id get it checked quick :armsup:
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Post by 80UTE »

Diesels can't ping (detonation type ping) if the timing is wrong they will knock or you have a mech problem that is making a pingging sound.

Wally
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Post by mechtech »

the other thing could be leaking injectors, the long stem type with pilot hole next to pintle.....just a thought
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Post by roberts »

pining is part of the combustion prosess in a desiel
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Post by Bush65 »

Pinging (pre-ignition) can occur in a petrol engine because the fuel is in the cylinder before the piston reaches the part of the cycle when the spark occurs.

As 80ute said this does not happen in a diesel, fuel is only injected when ignition is wanted. The exception could occur if an injector or the pump is faulty.
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Post by Syzygy »

hmm, it definately sounds like pinging.

perhaps it is a pump or injector problem...
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Post by Syzygy »

the only other thing i can think of is some sort of rattle/vibration on the exhaust. Fairly sure it isn't that though
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Post by -Richo- »

Did it just start pinging or have you gradually noticed it? Its probably not what happened to me but when my timing belt jumped a tooth it was knocking hard, running real rough. May be something to do with the timing belt...
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