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Ignition timing 91 degrees out...... Possible and still running???

Hi all, well I am still trying to get to the bottom of the 91 degree out reading from 2 timing lights......

The car doesn't pull as i would expect from a TT and it stalls in reverse and when rev's drop quick if you have to come off boost and stop quickly.....

Might be unrelated but thought I would throw it out there.......

 

Can a timing belt throw out the ignition timing so it reads as 91 degrees out and not hit valves and pistons?????

interference engines I have worked on before don't usually like having the belt on wrong and self destruct at less than this I thought??

 

Option 1 is buy new Nissan OEM belt and just suck it up and strip her this weekend and fit it making sure the marks are right and I didn't mess up last time......

 

Option 2 is, erm....... any idea's??

Watching my Z disintegrate on my driveway!!!

Featured Replies

Hi all, well I am still trying to get to the bottom of the 91 degree out reading from 2 timing lights......

The car doesn't pull as i would expect from a TT and it stalls in reverse and when rev's drop quick if you have to come off boost and stop quickly.....

Might be unrelated but thought I would throw it out there.......

 

Can a timing belt throw out the ignition timing so it reads as 91 degrees out and not hit valves and pistons?????

interference engines I have worked on before don't usually like having the belt on wrong and self destruct at less than this I thought??

 

Option 1 is buy new Nissan OEM belt and just suck it up and strip her this weekend and fit it making sure the marks are right and I didn't mess up last time......

 

Option 2 is, erm....... any idea's??

 

91 degree would make it un-drivable..LOL. you must of left the key out the shaft for bottom pully and its slipped, the timing belt pully has its own key and wont slip and change static timing.

  • Author
91 degree would make it un-drivable..LOL. you must of left the key out the shaft for bottom pully and its slipped, the timing belt pully has its own key and wont slip and change static timing.

I did think it was weird....lol

I shall pull fan and rad saturday and check the bottom pulley.......... can't find the key in my box of bits.......

If i did forget it may need to find one..... I used to have loads of them in motor factors when I worked there..... any ideas where I can get one???

Watching my Z disintegrate on my driveway!!!

I did think it was weird....lol

I shall pull fan and rad saturday and check the bottom pulley.......... can't find the key in my box of bits.......

If i did forget it may need to find one..... I used to have loads of them in motor factors when I worked there..... any ideas where I can get one???

 

chances are the pully has pushed it back when fitting...iff your very very lucky its still stuck at an angle in the keyway behind the pully...i might have a spare iff your stuck,let me know.

  • Author
chances are the pully has pushed it back when fitting...iff your very very lucky its still stuck at an angle in the keyway behind the pully

 

I'm never that bloody lucky........ lol

I must have one somewhere as I broke 3 engines........ Just need to find where I put them......lol

Watching my Z disintegrate on my driveway!!!

I'm never that bloody lucky........ lol

I must have one somewhere as I broke 3 engines........ Just need to find where I put them......lol

 

Should always gaffa tape them to the pullys like i do:tongue:

  • Author
Should always gaffa tape them to the pullys like i do:tongue:

I did put them in money bag, like I do with all the bolts, washers, grommets, etc....... But moved 3 times since and they are missing......

I will blame the wife for losing them, like she blames me for everything...........lol

Watching my Z disintegrate on my driveway!!!

Are you sure you used cylinder 1 to measure the ignition signal from ?

  • Author
Are you sure you used cylinder 1 to measure the ignition signal from ?

 

yep..... definitely cylinder 1...... Going to try znut's theory of key coming out of bottom pulley when i installed it as it was getting late and dark when i did it.......

Watching my Z disintegrate on my driveway!!!

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