Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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Did you disable the fuel system before starting the Van after you were done with the timing chain work?
Normally you pull the fuel pump fuse. Failure to do so could result in the engine jumping time since the tensioner have not built up oil pressure yet.
so at this point, you most likely jumped time. If you find it has jumped more than 3 teeth, you may have valve damage. At that point I would set all the timing chains and do a cylinder leak down before re-assembling.
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Yes, Pull the fuel pump fuse first and let it stall. Then take it apart and recheck the timing. Once you make the adjustment and you put it back together, turn the engine over about 3 times for 5 second cranking to build oil pressure. Then insert the fuse and start it.
If you did not disable the fuel system, the timing chain can jump time cause the tensioners have not built up oil pressure yet. So when it starts right up and fires, it jumps time.
It builts spring pressure. Not oil. Spring can allow it to move. If you turned the engine over with out it starting, the only other thing it could be is the timing may not have been correct from the beginning.
Did you replace the chains also?
When ever the chain tensioners go, timing chains should be replaced. They could stretch. So that could be one of the problems. But it is definitely timing related if you have a P0011 or P0021 after doing timing chain work.
We can go back and forth about this. I have been a Nissan Tech for 26 years. When you are doing timing chain repairs, you want to replace the tensioners with the guides, and replace the chains as well. Especially since you can't measure it and see if the chain is stretched.
I understand your frustration.. Believe me
I have seen this before many times. That is why I am sharing what I know with you.
Did you make those video's?
No, The upper oil pan I never remove. I do remove the wiper cowl and Pan to give me more room. It also makes it easier to remove the cover and you can use a jack on the upper pan to raise the engine. You only need to remove the lower pan.
I also have a trick to popping the timing cover off. Here is a video I made showing some timing chain works. this one is about the back timing cover gasket, which you may want to also check on yours. That could cause the P0011 or p0021 codes as well.
A) I have no idea what timing adjustment they are doing. There is no adjustments. It's a fixed timing system that the only thing controlling timing is oil pressure with the intake sprockets.
Did you do anything to the intake sprockets? You didn't touch any of the 4 bolts did you?
Timing if off to much can cause the misfire if timing is out to far. ( B )
Since most likely you have to go in there again. Before you go in there, start the van and pull the fuel pump fuse and let it run out of gas. Then do the work. When you are done, turn the engine over to build oil pressure. Then put the fuse in.
Make sure you line up all the colored links to the timing marks on the sprockets with the new chains.
No tricks.. To this day, I double and triple check everything in the timing chain area before I put it together. I check that back timing cover gasket, I check the Cam Chain tensioners, I check all tensioners and guides. I look at everything. Once I know everything is right. I put the cover on.
I do have two tricks for you.
First if you watch my video, you can use Brake caliper depress tool to help pop the timing cover off.
second, I leave the upper oil pan on. I do take a bead of silicone to the top part of the upper oil pan where it mates to the timing cover and also put a bead on lower timing cover as well. Just in case I bump putting it on. Double up that area.
If you find that it's more than 3 teeth off. After you set your timing. When you do a cylinder leak down, if you have to much leak down, that would indicate valve damage. So at that point the cylinder head with that particular valve would need to be removed so that valve cam be repaired.
That looks like oil, not coolant. If you look around that area, everything around it looks like it's from a oil leak. Possible valve cover gasket or something.
Where are the chains colored links?
Yeah, it takes around 34 to 46 engine revolutions for the timing marks on the chain to line back up with the marks.
That is good news.
Glad I was able to help with the timing issue.
The only way to really determine what is causing those lights to come on is to use a advanced level scanner to read the codes you have in the ABS system