6.0 knocking. injector no codes? help?
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6.0 knocking. injector no codes? help?
So I am owning my first diesel so I am still getting use to it. Shortly after I bought it, I had to make my 900 mile drive to work and it ran great. After being here for a week or so I noticed heavy white smoke bit thought it had to do with the -5- -10° And haven't seen the white smoke since the weather warmed up. Since then I have noticed a "knocking" sound that to me sounded like a rod that I didn't notice before. After reading through these forums, it sounds like I probably have a cracked injector. I have had no engine light or anything. So my question is, can an injector fail or be cracked without an engine light and can a code reader detect which one it is with no light on?
Last edited by fda7709; Mar 20, 2015 at 12:57 PM. Reason: spelling
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Injector diagnosis require a cylinder contribution test. The best system for doing this is still at the dealership or a shop that has Ford's IDS system. The test will show which cylinder (s) are not contributing proper power.
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Okay. Is it common to not see a check engine light If an injector is cracked? I was hoping my sct live wire that is on its way would be able to tell me something. But from what you are saying, sounds like it won't be of much diagnostic help for this particular issue
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Not really. You can get injector high/low codes if the problem is with the coils on the injectors but there are many ways they can fail besides a coil.
The contribution/balance test will show if any cylinders are "weak" for any reason. It could be a bent pushrod, loose rocker arm, or whatever also. It is very common for the issue to be the injector though. Many times those issues won't set a light or throw a code.
The contribution/balance test will show if any cylinders are "weak" for any reason. It could be a bent pushrod, loose rocker arm, or whatever also. It is very common for the issue to be the injector though. Many times those issues won't set a light or throw a code.
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Alright thanks. I guess I will see if I can find a time to take it somewhere that had the equipment to look at that. I am in watford city, north dakota so the nearest dealership of any Kind is at least an hour away
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Not really. You can get injector high/low codes if the problem is with the coils on the injectors but there are many ways they can fail besides a coil.
The contribution/balance test will show if any cylinders are "weak" for any reason. It could be a bent pushrod, loose rocker arm, or whatever also. It is very common for the issue to be the injector though. Many times those issues won't set a light or throw a code.
The contribution/balance test will show if any cylinders are "weak" for any reason. It could be a bent pushrod, loose rocker arm, or whatever also. It is very common for the issue to be the injector though. Many times those issues won't set a light or throw a code.
Can be hard to diagnose as the injector could be over-fueling, lazy spool which translate to lazy timing etc.
Josh
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