Cannot set timing right

Tiny
OMAR RODRIGUEZ COREANO
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  • 1994 NISSAN SENTRA
  • 1.6L
  • 4 CYL
  • AUTOMATIC
  • 100,000 MILES
I just change the car valve stem seals and when I try to set the timing like the manual says the car is not in time and do not have compression. I have been trying for days to set timing.
Tuesday, March 6th, 2018 AT 4:05 PM

11 Replies

Tiny
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Is yours a belt or a chain, if the valve timing has been set wrong and the engine rotated, you will bend valves. I am concerned that this may be the case here, but first please advise if chain or belt first.
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Wednesday, March 7th, 2018 AT 12:56 AM
Tiny
OMAR RODRIGUEZ COREANO
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Chain.
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Wednesday, March 7th, 2018 AT 2:30 AM
Tiny
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If you have set the valve timing as per these pictures it will be correct. If you have no compression, you may have bent valves with incorrect timing and turning the engine over. Check your timing again and do a leak down test to see if compression is leaking past the valves.
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Wednesday, March 7th, 2018 AT 3:20 AM
Tiny
OMAR RODRIGUEZ COREANO
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I have been doing it like that but when I rotate engine with a wrench the intake camshaft always hit the number two piston.
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Wednesday, March 7th, 2018 AT 3:33 AM
Tiny
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If the timing is correct, I do not think it is possible but are the cams mixed up?
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Wednesday, March 7th, 2018 AT 4:02 AM
Tiny
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They are not, I just set up the timing like the picture and not even a full turn the number two piston hits the valve because the camshaft (triangle things) are down.
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Wednesday, March 7th, 2018 AT 6:38 AM
Tiny
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Can you post a clear pic of your valve timing set up, if it is set as per specs, it should be ok, so something is very wrong here.
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Friday, March 9th, 2018 AT 3:38 AM
Tiny
OMAR RODRIGUEZ COREANO
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Car still won't start
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Sunday, March 11th, 2018 AT 12:16 PM
Tiny
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Have you checked that the valve touching the piston is not damaged and being held open all the time?
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Sunday, March 11th, 2018 AT 5:21 PM
Tiny
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Yesterday I took it out to see if there where bend and they are ok.
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Sunday, March 11th, 2018 AT 5:34 PM
Tiny
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Well if that is ok, you have to start the timing procedure from the start, check that engine is set a TDC, check both cams are set correctly and re check timing chains are exactly as needed, if this is correct then it must work, I feel that one of the timing points is not correct, that is the only way a valve can hit a piston, apart form it being stuck down and you say that is not the case here. I would also ensure that the crank turns full revelation with out the cams fitted, this will ensure all valves are seated and if it stops, there must be a valve stuck part down, or a problem with the crank /piston. Do not take anything for granted as we must ensure every point is covered and checked.
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Sunday, March 11th, 2018 AT 5:45 PM

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