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Old 03-14-2019, 08:51 PM   #1
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Default KA won’t fire off.

recently I was in my engine checking on a low oil pressure issue, which as part of the diagnostics, I checked my rocker rails and the oil channels under the camshaft. I am afraid however that I may have bitten off something to big for me to chew. I put the cam back in and torqued everything to spec, but when I went to light off the truck, my engine sounded like it was way out of time. The engine would spin and almost would fire, but the whole truck would shake and shudder like something was really wrong. I think I possibly put the camshaft back in wrong, but before I took it out I had the engine set at TDC, and when I was putting it back on, I used the position of the valves in relation to the angle of the rocker arm in order to theoretically properly position my cam. Let me know if y’all need any more details to help with diagnosis.
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Old 03-14-2019, 09:53 PM   #2
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Remove the valve cover. Set the engine to TDC on the #1 cylinder. The valves on the #1 cylinder will all be closed if you’re on the compression stroke. The exhaust valve will be open if you are on the exhaust stroke. Where does the distributor point when you’re on the compression stroke?
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Old 03-14-2019, 11:11 PM   #3
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Remove the valve cover. Set the engine to TDC on the #1 cylinder. The valves on the #1 cylinder will all be closed if you’re on the compression stroke. The exhaust valve will be open if you are on the exhaust stroke. Where does the distributor point when you’re on the compression stroke?
Towards the #1 spark plug hole
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Old 03-15-2019, 03:41 AM   #4
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Towards the actual plug hole or the number one post on the cap?
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Old 03-17-2019, 12:36 PM   #5
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Towards the actual plug hole or the number one post on the cap?
The hole
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Old 03-17-2019, 01:33 PM   #6
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With the engine at top dead center and both valves closed, the rotor should point to be number one wire on the cap. Now if that happens to be close to the number one cylinder you are good. It sounds like the distributor is incorrectly indexed.
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Old 03-17-2019, 08:03 PM   #7
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Alright thanks. Let me just ask though, is it possible to put the camshaft back in wrong? I made sure to set the engine to TDC before I touched it, and when I put it back in, I sort of used the rocker arms’ position on the valves to align my camshaft. It’s hard to explain, but I figured it would work and now I’m not sure. Let me know what the right way is if my way was wrong.
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Old 03-17-2019, 08:35 PM   #8
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If the alignment of your crank, cam, distributor shaft, and distributor rotor do not look like the pictures in this link, they’re wrong. http://www.infamousnissan.com/forum/...ad.php?t=33948
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Old 03-17-2019, 09:55 PM   #9
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Yeah I think I fucked up the alignment of my rotor when I was messing around with my oil pump a month ago. I’m gonna be setting the engine to TDC and pulling off the distributor cap as soon as I get off these crutches to take a look.
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Old Today, 12:50 AM   #10
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The only way the cam could be installed wrong is not being timed correctly IE number one valves not closed when the piston is sitting on TDC.
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