Flat Spot

[aimre]

Hey guys,

i seem to have a small problem that i cant get rid of.
The problem is, i have a flat spot through the rev rangem at about 2000 rpm when light throttle is applied, if i apply slightly more throttle, i can get through the flat spot, then drop back to orriginal throttle position and it will continue up the revs on its merry way.

To try and fix this, i have:

Changed spark plugs
Fuel filter
and inspected the dizzy cap (without removing it) for damage.

What could this be and how do i fix it??

Thanks

PS. Ive searched

[BlitZ]

leads?

Hey guys,

i seem to have a small problem that i cant get rid of.
The problem is, i have a flat spot through the rev rangem at about 2000 rpm when light throttle is applied, if i apply slightly more throttle, i can get through the flat spot, then drop back to orriginal throttle position and it will continue up the revs on its merry way.

To try and fix this, i have:

Changed spark plugs
Fuel filter
and inspected the dizzy cap (without removing it) for damage.

What could this be and how do i fix it??

Thanks

PS. Ive searched

[EuroDude]

Yeah it sounds like the ignition sparks are not providing enough power (possibly due to bad spark lead resistance or bad spark plugs), I have doubts its the Dizzy, but it wont hurt to get a new Dizzy Cap (not expensive) or clean the white powdery crap from your old Dizzy Cap terminals.

But if its not affecting the upper Rev range, then the Valve Tappet clearances may be out and causing rev issues.
Adjust them ftw. Here's a guide: http://www.ozhonda.com/forum/showthread.php?t=15443

[aimre]

so it is spark?

What lead do ppl recomend?

[destrukshn]

try your spark plugs.
or cleaning your throttle body.

[aaronng]

When you replaced your spark plugs, did you make sure to get plugs with a 1.1 mm gap? Also, take off the dizzy cap to check for corossion.

[aimre]

When you replaced your spark plugs, did you make sure to get plugs with a 1.1 mm gap? Also, take off the dizzy cap to check for corossion.

I got the exact sprak plugs that it says to get on the rocker cover.

Willl try throttle cleaner and the dizzy cap checking. Can i remove the cap without removing dizzy?

thanks

[aaronng]

Willl try throttle cleaner and the dizzy cap checking. Can i remove the cap without removing dizzy?

thanks

Yup, just remove the leads (remember the location for each plug) and unbolt the cap. There should be quite a bit of corrosion as usual. Clean it out and put on some dielectric grease.

[ECU-MAN]

check the rotor cap for craks, also check the neck of the leads for marks that look like cracks,

you can wrap them with shit loads of electrical tape and fix them

[Professional]

More things, check the ignition timing. It may be the issue.

[aimre]

how do i check timing, i need a timing light right, somehow i got one, but dunno how to use it

[aimre]

Ok Guys, pulled the cap off the dizzy, here what i found: