tdc spark @ different time than tdc on crank (solved)
#1
tdc spark @ different time than tdc on crank (solved)
Hey guys,
97 civic lx Wont start. Narrowed it down to the spark being out of time with the crank & cam pullies. Changed the crank positioning sensor, no effect. Tried multiple different distributors, no change. Tired other Computer from an Ex model same year, no effect. What could cause the spark to be off time with the timing belt? No CELs. Yes, the CEL does work.
97 civic lx Wont start. Narrowed it down to the spark being out of time with the crank & cam pullies. Changed the crank positioning sensor, no effect. Tried multiple different distributors, no change. Tired other Computer from an Ex model same year, no effect. What could cause the spark to be off time with the timing belt? No CELs. Yes, the CEL does work.
#4
Re: tdc spark @ different time than tdc on crank
Then how do you know spark is out of time?
Have you checked whether the spark plug wires are installed in the wrong firing order?
Have you checked whether the spark plug wires are installed in the wrong firing order?
#5
Re: tdc spark @ different time than tdc on crank
Wires are according to the hood diagram. I used a timing light to see that the timing was about not coming around when the light flashed. I used the same light on my 2000 Civic and it works perfectly.
#7
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#8
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Re: tdc spark @ different time than tdc on crank
If you're checking the spark as in ignition timing with a timing gun, it shouldn't line up with the TDC mark, it should be lining up with the 3 ignition timing marks.
EDIT: Are you sure you clipped onto the #1 ignition wire?
EDIT: Are you sure you clipped onto the #1 ignition wire?
#10
Re: tdc spark @ different time than tdc on crank
yes, clipped the #1 wire. it is far from all 4 marks by at least a few inches. I don't know how else to describe it. When #1 cylinder sparks, the timing light flashes and there is no dot showing on the crank pully
#13
#15
Re: tdc spark @ different time than tdc on crank
Did you replace the coil and ignitor with the distributor housing? Ignitors and coils are known to go bad on these cars. But as others have mentioned above, you should not be getting spark at TDC, it should be off by the speced degrees.
#16
Re: tdc spark @ different time than tdc on crank
Your timing belt almost surely skipped a tooth or two. Set the cam at TDC1 and then post pictures of the cam and the alignment of the pointer with the crank pulley marks.
Is there bright white spark at all 4 plugs?
Does the fuel pump prime?
Is there bright white spark at all 4 plugs?
Does the fuel pump prime?
#18
Re: tdc spark @ different time than tdc on crank
How do I post pics? I changed the distributor to a new one, and one from a 97 ex that was running. Yes, all plugs spark bright. Yes, the pump primes to 40psi and holds there.
#21
Re: tdc spark @ different time than tdc on crank
https://fbcdn-sphotos-f-a.akamaihd.n...05102541_n.jpg
https://scontent-b-ord.xx.fbcdn.net/...14359284_n.jpg
https://scontent-b-ord.xx.fbcdn.net/...33746456_n.jpg
https://scontent-b-ord.xx.fbcdn.net/...14359284_n.jpg
https://scontent-b-ord.xx.fbcdn.net/...33746456_n.jpg
Last edited by Former User; 06-19-2014 at 11:26 AM. Reason: Trying to make pics display
#25
Re: tdc spark @ different time than tdc on crank
The pointer works like the sight on a gun. I can only see the lower element of the pointer in your picture, though I think the timing must be at least very close.