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n63 injector problem again after replaicng them.
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05-03-2019, 09:00 AM,
Post: #1
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n63 injector problem again after replaicng them.
Hello. I had two problems: pressure was dropping in bank 2. Ista said replace injector at cylinder 8. Replaced all injectors with new ones. Also spark plugs. When I check pressure, it is ok now but ista writes again: replace injector at cylinder 8. What can be the reason? Misfire counts are increasing again.
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05-03-2019, 09:38 AM,
Post: #2
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RE: n63 injector problem again after replaicng them.
Check the timing chain with ISTA for stretching.
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05-03-2019, 09:43 AM,
Post: #3
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RE: n63 injector problem again after replaicng them.
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05-03-2019, 10:08 AM,
(This post was last modified: 05-03-2019, 10:08 AM by B1257.)
Post: #4
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RE: n63 injector problem again after replaicng them.
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05-03-2019, 10:12 AM,
Post: #5
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RE: n63 injector problem again after replaicng them.
(05-03-2019, 10:08 AM)B1257 Wrote:Spark plugs are new. Compression is good but would ista write change injector on cylinder 8 because of bad compression?(05-03-2019, 09:43 AM)bmwlover Wrote:How is the spark looking? what about compression on cyl 8? and at least carbon deposit test with idle roughness?(05-03-2019, 09:38 AM)Munich Simon Wrote: Check the timing chain with ISTA for stretching. Do not know about carbon deposit test. How to perform it? |
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05-03-2019, 16:25 PM,
Post: #6
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RE: n63 injector problem again after replaicng them.
Check the Spark thread in the Cylinderhead. If somebody changed the sparks wtihout a joint-nut it could be possible that the spark does not meet the right angle for ignition.
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05-03-2019, 16:31 PM,
(This post was last modified: 05-03-2019, 16:33 PM by bmwlover.)
Post: #7
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RE: n63 injector problem again after replaicng them.
Installed spark plug from cylinder 8 to cylinder 7 and ista writes to change injector on cylinder 8 again.
Before changing all injectors, ista also wrote to change injector on cylinder 8. Why I think that injector is good now? Before changing them, pressure was dropping on bank 2. Now it does not drop. |
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05-03-2019, 16:34 PM,
(This post was last modified: 05-03-2019, 16:35 PM by M-Simon.)
Post: #8
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RE: n63 injector problem again after replaicng them.
I mean not the thread from the spark plug! It is more worse
 I mean the spark plug thread in (!!) the cylinder head. This head is made from aluminium. A aluminium thread is very very sensible. If this thread is out of shape it is possible, that the spark plug does not reach the right position!
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05-03-2019, 16:38 PM,
Post: #9
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RE: n63 injector problem again after replaicng them.
With eye was not able to see anything. How can it be checked?
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05-03-2019, 17:53 PM,
(This post was last modified: 05-03-2019, 17:56 PM by M-Simon.)
Post: #10
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RE: n63 injector problem again after replaicng them.
That’s the question. Normally I would pull the head. But this is to much effort.
My first idea is to mark the washer from the spark plug with a thick color. Screw it in until it feels tight. Screw it out. Check if the color is now also evenly on the head where the washer was in contact. |
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