99XLT-Explorer
Well-Known Member
- Joined
- July 13, 2012
- Messages
- 120
- Reaction score
- 0
- City, State
- inverness FL
- Year, Model & Trim Level
- 1999 xlt explorer 4.0SOHC
i took the front engine cover off my 4.0 sohc because i was going to take off the balance shaft chain due to it being very stretched and slapping i got in there and found that the balance shaft chain was very bad with about half an inch of play.
While i was in there i figured i would change the primary chain,tensioner,and guide.Everything went good and got it all buttoned up and it was running rough and the one time i blimped the throttle i could tell the timing was off because i could here the exhaust in the intake.
The only way i could explain on how the timing could have jumped was when i was tightening the jackshaft sprocket i used a technique i found on here of someone putting a bolt through the sprocket and attach it to a chain to keep it still well while the chain was tightening i think the chain got enough slack to hop a tooth or 2.
what do you guys think? theres no way that i could have caused valve damage because i dont see how it would have run at all after the first crank.
im going to break back into it tomorrow and check it i took pics of how it was before i removed the chain so i will be able to tell if it jumped
While i was in there i figured i would change the primary chain,tensioner,and guide.Everything went good and got it all buttoned up and it was running rough and the one time i blimped the throttle i could tell the timing was off because i could here the exhaust in the intake.
The only way i could explain on how the timing could have jumped was when i was tightening the jackshaft sprocket i used a technique i found on here of someone putting a bolt through the sprocket and attach it to a chain to keep it still well while the chain was tightening i think the chain got enough slack to hop a tooth or 2.
what do you guys think? theres no way that i could have caused valve damage because i dont see how it would have run at all after the first crank.
im going to break back into it tomorrow and check it i took pics of how it was before i removed the chain so i will be able to tell if it jumped