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Can i undo injector while running to find which one is missing at low revs do they have to be programed in if i undo it

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Hi Lester, The injectors can be disconnected during operation. This can be carried out by disconnecting the electrical connector to each injector in turn. I believe the problem of a misfire will be more likely be a spark plug, or if your vehicle uses separate ignition coils for each plug, maybe one of those than any one of the injectors. The disconnections may cause fault codes to be recorded. You require to erase the codes afterwards. Regards John

Posted on Oct 12, 2013


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Posted on Jan 02, 2017


SOURCE: misfires on low revs and slow running

Have you had a diagnostic check? This sounds more like a timing issue, I would have the plugs, plug wires and coils checked first before I get into the injectors.

Posted on Sep 02, 2009

  • 6826 Answers

SOURCE: Noisy engine on X type

I'm sorry but I only have information on the gasoline versions of this vehicle on my online resource.

Are you using diesel that is right for the season?

Most diesel engines are louder than gasoline engines as a rule.

injector realigning or recalibrating might work.

Posted on Oct 14, 2010

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run the fault codes . Check injector for clean and operating correctly. Check fuel pressure at the injectors.

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I have a 2002 Lincoln LS that up to 3000 rpm seems to run fine. at 3000, it starts to shudder and miss. any ideas/

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White smoke is usually a good sign of un-burnt diesel so reading your post and all the things you have already changed ie the glow plugs I would have the injectors tested to make sure they are atomising properly as it sounds to me like when your car isn't under load ie at low revs you have a cylinder that isn't firing correctly
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1988 Toyota Camry 2.5 liter V-6. Engine starts fine, but after started it misses. The car misses terribly under a load, but will sometimes accelerate smoothly if you accelerate at a very slow pace. Will...

most misses are injector related either from dirty injectors , low fuel pressure ow injector wiring faults
use a quality injector cleaner for a tank or two
run the fault codes to check for other related sensor problems

May 23, 2017 | 1988 Toyota Camry

1 Answer

I have a 2004 5 series 530I automatic. It misses when accelarating especially at low revs. The plugs are brand new, can anyone tell me whats wrong.

check the continuity of your plug wires and cap/ rotor contacts if applicable. Dirty injectors are also a possibility. A shop computer diagnostic would be a worthwhile investment to prevent further problems. Basics like fuel & air filters and clean throttlebody/ mass air flow sensor can all be contributing factors...Also check for leaking injector o-rings at intake manifold and fuel rail...

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1 Answer

Misfires on low revs and slow running

Have you had a diagnostic check? This sounds more like a timing issue, I would have the plugs, plug wires and coils checked first before I get into the injectors.

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1 Answer

Just changed fuel and air filter on 1999 nissan D22 pick-up 2.5TDi now will not rev past 2000rpm

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