100 Series 1HZ injector failure
Submitted: Friday, Jul 29, 2005 at 10:48
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Seto
Guys,
I became aware of a faulty injector on my Cruiser when the engine began running roughly at 113,000km. I checked the injector lines for air & noticed that when number 1 line was cracked open there was no difference to performance, unlike the other cylinders. I probably did a further 15km before not being able to see the vehicles behind due to a massive cloud burst of smoke. Further diagnosis has revealed number 1 piston has a hole & is cracked from one side to the other.
Has anyone else had this happen and how do we get on in
the desert if an injector were to jam open?
David.
Reply By: Rigor - Friday, Jul 29, 2005 at 11:07
Friday, Jul 29, 2005 at 11:07
Hi David , bad luck . Just a thought , I presume that you are blaming the stuck injector for damageing the piston . I always look at situations in the reverse to most people (I love an argument ) What I am suggesting is the piston failed (lack of compression therefore missing) and no difference when the injector cracked .
The injector may be fine , only way to prove is to swap with another cylinder or get it checked.
Good luck with the rebuild.
Cheers Dave L.
AnswerID:
122687
Reply By: GUPatrol - Friday, Jul 29, 2005 at 11:33
Friday, Jul 29, 2005 at 11:33
Faulty injectors ie: bad spray pattern will damage a direct injection diesel engine, it will crack pistons, hole pistons and damage compression rings.
On an indirect injection diesel it is much more unlikelly but over a length of time it will damage it too.
Having said that, before all that happens you can easily hear a bad diesel knock coming from that piston (described more like a loud tapping noise)... caused by the poorly working injector...
That is why it is so important to keep an eye on injectors and do them every time the engine starts to get noisy.
Your second question, injectors don't usually jam open but if you get a bad injector in
the desert (unlikely that this will happen suddenly) there is not much you can do.
Will
AnswerID:
122691