As was already said, the fan has to be removed to get to the hydraulic tensioner, and there are two "O" rings that need replacing ( I have extras if you need them). But what was not said is that the tensioner needs to be taken apart and cleaned, examined and tested before being replaced. The check valve will trap junk causing it not to seal which means it won't hold under pressure. (no matter what "O" rings you replace. RTV is the biggest culprit here (just like in VW's). What to examine when the tensioner is apart?
check and clean the check valve for junk, look at the working end of the piston for wear (some times they will have flat spots on the end and need replacing). Make sure the spring is not broken and the clip holding everything together is in good condition. Test it as the Sedan shop manual says, if all works out, . put on new "O" rings and reinstall. I have found only two lower tensioners that I could not use.
But back to the cam question; I have found several cams that have been marked twice. It looked like one was cast into the cam and the other was put on later. I look at the mark and the notch at the (clutch side) end of the cam. This is illustrated in the Coupe shop manual on page 64. The only way your chain could have jumped a tooth is if it has stretched. Then you need a new cam chain, but you said it was changed 10 K ago, so I doubt this is the case.
Bill, looking at all the e-mail threads on your car not going faster than 30 miles per hour. I have to ask a few more questions;
1. What did you do besides changing the plugs, coil and oil?
2. Did this condition exist before you changed the plugs, coil and oil?
3. If it was running well before, and you didn't touch the cam or cam chain what makes you believe it has jumped a tooth?
4. does the engine (sitting in your drive way) have the rpm's? Or is it giving you about half the rpms it had before?
My thoughts, this is an electrical problem and not mechanical. Take both plugs out and with them grounded to the engine turn the engine over and see if both are getting spark. I think one of the cables on your coil is not giving you spark and you are running on one piston.
Bill
> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > riceburner006 > Sent:
> Saturday, September 30, 2006 7:27
> PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> [2cylinderhondas] Re: Tensioner
> --- In
> 2cylinderhondas@ yahoogroups. com
> ,
> "Bill" wrote:
> > Do I need to remove the
> fan to get to the tensioner? Have patience
> > with me, I am a VW guy.
> Trying to loosen the chain so I can realign
> > my cam. Thanks,
> Bill in Missouri
> Yes! and you may need to replace a few of those
> fan cushions and or
> 6mm bolts,as they are usually damaged. Also check the
> O rings on the
> tensioner,as the're probably hard and flattened out.
> riceburner006