AJP8 4.5 not running well
Discussion
Hi folks,
my body-off is coming to an end and I restarted the engine after 2 years off. Now I have some issues with my engine.
There wasn't much done with the engine while it was out: the pumps incl. the auxilliary shaft were refurbished, the chain timing was set, the valve clearance was set and the first camshaft bearing had to be renewed. I think that was all what they did.
Before the body-off the engine was running well so far (at least with no visible issues) but the valve clearance for example was horrible.
After re-mounting the engine I set the TPs and the software shows the correct values. I can start the engine w/o any problems, it seems to run OK and there are no misfires.
But I have the following issues:
- After cold start the even (right) side is smoking a lot, the odd (left) side not. "A lot" means it's getting foggy in my garage very quickly when the gate is closed.
- After warm-up (10-15min) the right side is hot on the tailpipe, the left side not (just warm). The smoke is disappeared.
- AFR alarm on both sides after short time period. Can reset but it takes just it's coming back soon.
I checked the spark plugs today:
- Left side: 1 is black, 3,5,7 are clean
- Right side: 2 is clean, 4,6,8 are black
Connection of the leads is like this:
Ignition Leads
As far as I know the connecting order is the same on 4.2 and 4.5, right?
What I haven't done yet:
- One of the Lambda sensors shows always 0V, the other one is moving. But this shouldn't be an issue for cold start.
- Nothing done with the ignition moduls, re-used the old ones.
What else can I do/check?
Kind regards from Germany and many thanks in advance
Michael
my body-off is coming to an end and I restarted the engine after 2 years off. Now I have some issues with my engine.
There wasn't much done with the engine while it was out: the pumps incl. the auxilliary shaft were refurbished, the chain timing was set, the valve clearance was set and the first camshaft bearing had to be renewed. I think that was all what they did.
Before the body-off the engine was running well so far (at least with no visible issues) but the valve clearance for example was horrible.
After re-mounting the engine I set the TPs and the software shows the correct values. I can start the engine w/o any problems, it seems to run OK and there are no misfires.
But I have the following issues:
- After cold start the even (right) side is smoking a lot, the odd (left) side not. "A lot" means it's getting foggy in my garage very quickly when the gate is closed.
- After warm-up (10-15min) the right side is hot on the tailpipe, the left side not (just warm). The smoke is disappeared.
- AFR alarm on both sides after short time period. Can reset but it takes just it's coming back soon.
I checked the spark plugs today:
- Left side: 1 is black, 3,5,7 are clean
- Right side: 2 is clean, 4,6,8 are black
Connection of the leads is like this:
Ignition Leads
As far as I know the connecting order is the same on 4.2 and 4.5, right?
What I haven't done yet:
- One of the Lambda sensors shows always 0V, the other one is moving. But this shouldn't be an issue for cold start.
- Nothing done with the ignition moduls, re-used the old ones.
What else can I do/check?
Kind regards from Germany and many thanks in advance
Michael
Checked the injectors: According to the labels all connections are correct. So it's not that easy... 
Yes, of course - I have EvoOllis software running but I have to startup the engine again to see what the Adaptives are really doing. As far as I remember they weren't that bad but I don't know exactly.
Reg. the Lambdas: They are just labeled with 1 and 2. I guess 1 is for left (odd) and 2 is for right (even). Correct? And yes, I will check also the connectors again.
I also ordered now new spark plugs and new coil packs. The spark plugs doesn't look good anymore (the black ones at least) and the coil packs are not that expensive so I'll change them as a preventive measure.
I'll come back to you later with some more information.
Cheers
Michael
Yes, of course - I have EvoOllis software running but I have to startup the engine again to see what the Adaptives are really doing. As far as I remember they weren't that bad but I don't know exactly.
Reg. the Lambdas: They are just labeled with 1 and 2. I guess 1 is for left (odd) and 2 is for right (even). Correct? And yes, I will check also the connectors again.
I also ordered now new spark plugs and new coil packs. The spark plugs doesn't look good anymore (the black ones at least) and the coil packs are not that expensive so I'll change them as a preventive measure.
I'll come back to you later with some more information.
Cheers
Michael
Found something but not sure what it means:
https://youtu.be/0dbbdBtkvAM
Spark plugs still removed, just ran the engine with the starter. As you can see there's some gasoline spray coming out of cyl. 1, 4, 6 and 8 - exactly the ones where the spark plugs were black.
What could it mean? Broken injectors?
Cheers
Michael
https://youtu.be/0dbbdBtkvAM
Spark plugs still removed, just ran the engine with the starter. As you can see there's some gasoline spray coming out of cyl. 1, 4, 6 and 8 - exactly the ones where the spark plugs were black.
What could it mean? Broken injectors?
Cheers
Michael
OK but don't you think there's too much coming out of 1, 4, 6 and 8? I just turned the starter and immediatly there's coming so much fuel out of them.
Anyway - as soon as I'll have time I'll cross-check the injectors. And I have to talk to the guys who should have cleaned and tested the injectors.
Keep you updated
Michael
Anyway - as soon as I'll have time I'll cross-check the injectors. And I have to talk to the guys who should have cleaned and tested the injectors.
Keep you updated
Michael
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