Author Topic: B16 jumps timing  (Read 1258 times)

Offline fritter critter

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B16 jumps timing
« on: June 19, 2011, 10:14:25 PM »
So I recently got my head machined and all put back together, rotated the crank mutiple times to check my timing marks to make sure they were on and tried to drive it to work and it jumped timing on me. On closer inspection it looked a little loose so I redid the timing on it again and put a screwdriver on the tensioner to sorta take out the extra slack, which worked and rotated mutiple times again to check timimg and made sure to tighten the tensioner and started it and drove home. Started to drive it again today and jumps timing again. My belt is still tight and don't feel play in the tensioner. I'm using the same timing belt I used before I got the head machined and have ran out of ideas of what may be wrong. Any ideas of what's wrong will be greatly appreciated.

Offline fritter critter

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Re: B16 jumps timing
« Reply #1 on: June 19, 2011, 10:17:06 PM »
Oh forgot motor info, B16A2 block, jdm B16 head, stock headgasket, arp studs, stock cam and cam gears

Offline unified11

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Re: B16 jumps timing
« Reply #2 on: June 19, 2011, 10:19:17 PM »
Old/stretched timing belt?  Faulty tensioner?  Those are the most common things that cause a belt to jump.
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What the fuck are you saying. None of your posts make any god damn sense.

Offline fritter critter

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Re: B16 jumps timing
« Reply #3 on: June 19, 2011, 10:21:15 PM »
Is there a way to check a tensioner to see if its faulty?

Offline Ran

Re: B16 jumps timing
« Reply #4 on: June 19, 2011, 11:55:29 PM »
was your head milled at all?
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Offline fritter critter

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Re: B16 jumps timing
« Reply #5 on: June 20, 2011, 07:40:04 AM »
Yes it was milled, how much not sure

Offline thefirstPACT

Re: B16 jumps timing
« Reply #6 on: June 20, 2011, 08:02:55 AM »
those tensioners aren't hydro so it should just bolt down. How is your dizzy? Does it spin freely? If it doesnt that could be a culprit as well.
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Offline fritter critter

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Re: B16 jumps timing
« Reply #7 on: June 20, 2011, 11:44:44 AM »
I will check but I popped my hood yesterday night and I can tell vy looking at the cam gears the timing is off, by how much I can't tell

Offline Ran

Re: B16 jumps timing
« Reply #8 on: June 21, 2011, 12:09:45 AM »
I had my motor jump timing when I stuck the dizzy in 180 degrees around. :-\
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Offline fritter critter

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Re: B16 jumps timing
« Reply #9 on: June 21, 2011, 08:03:13 PM »
Ok took the dizzy cap off and the rotor does not spin, but on closer inspection, number 3 cam cap was on backwards (I didn't do it, a friend who helped did and I didn't check his work). Would that cause it?

Offline Thefastest4dr

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Re: B16 jumps timing
« Reply #10 on: June 21, 2011, 08:37:32 PM »
Ok took the dizzy cap off and the rotor does not spin, but on closer inspection, number 3 cam cap was on backwards (I didn't do it, a friend who helped did and I didn't check his work). Would that cause it?

It could have caused it. Are the cam caps over torqued?
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Offline fritter critter

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Re: B16 jumps timing
« Reply #11 on: June 21, 2011, 09:29:01 PM »
The ones that can fit with a long socket yes, the 4 that also act as valve cover bolts were hand tightened

Offline Thefastest4dr

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Re: B16 jumps timing
« Reply #12 on: June 21, 2011, 09:41:41 PM »
The ones that can fit with a long socket yes, the 4 that also act as valve cover bolts were hand tightened

Dammit dane!! I should of came over and supervised.
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Offline fritter critter

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Re: B16 jumps timing
« Reply #13 on: June 21, 2011, 10:01:00 PM »
Ha ha I know right? See what happens when I work by myself?