This is what happened...

I bought this car and it there was no problem with it. Suddenly, I felt that the RPM is bouncing from 800 to 100, and the engine almost died. I tried to find a mechanic.. with my RPM falling down to 100. Especially when I stepped on the breaks. Luckily,I was able to reach the HONDA CASA at quezon avenue.

They told me that their diagnosis regarding this matter was to change the Computer box.Its worth 40T,so I told them "maybe some other time because of lack of budget". So, for the meantime they cleaned the throttle body and issued me a new gasket for it [THROTTLE BODY] and a new air filter.They also changed the sparkplugs.

So the next day I picked up the car and its fine!So before I left..one of their agents adviced me to change the computer box very soon.What we did is just for the meantime,he said.

What I did is,I went to Banaue..and look for a Computer Box specialist.Luckily I found one.He told me that the computer box is fine and doesnt need to be replaced.But he told me that the source of the problem (RPM Falling to 100) is the AIR VALVE.So he troubleshooted my engine and had done it successfully.

Before I left Banaue the Mechanic told me that I also needed to change my cylinder head gasket.Bcuz if not the engine will experience excessive overheating in no time everytime I use the car.


The next day..I went to see my friend mechanic who lives near our place.I asked him to change the cylinder head gasket together with the timing belt.

So he adviced me that if ever we will change your cylinder head gasket it is best that we change also the following...

1.CYLINDER HEAD GASKET
2.TIMING BELT
3.TENSIONER
4.CRANK SHAFT OIL SEAL
5.CAM SHAFT OIL SEAL
6.VALVE COVER GASKET
7.LOWER RAD HOSE [RADIATOR]
8.SPARK PLUG SEAL
9.VALVE SEAL
10. 'O' RING
=+ ADDITIONAL PARTS +=
11.CAM HOLDER
12.PCV VALVE
13.IDLE PULLEY BEARING
14.INTAKE MANIFOLD GASKET
15.WASHER HEAD COVER
16.WAHSER HEAD COVER [DIFFERENT SIZE]
17.TUBE A PCV

*My friend mechanic recommended me to change those stuff because when he opened the engine...all that are listed are tearing and will not last long if I didnt change them.

FROM CASA: 1.GASKET THROTTLE BODY, 2. AIR FILTER, 3.SPARKPLUGS

FROM BANAUE:1. AIR VALVE

So when my mechanic completed and finished the project he asked me to start the engine.

So heres the problem...

Everytime I start the engine (especially when cold),the engine is always shaking and its also visible in the RPM gauge.The hand from the RPM gauge is also jiggling from 500 to 1000 RPM. Especially when you're riding it..you really feel the idle moving up and down...feels like the engine is dying even if its not.It doesnt stop even with the aircons ON.I love the car but it annoys me everytime Im using it.

Help me please,I already spent too much money with this problem and no one can do the trick.

So far my expenses are already gathered worth 30T more or less.

HELP me please.