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#119147 27/12/23 04:51 PM
Joined: Jan 2016
Posts: 7,466
Likes: 143
NormK Offline OP
SENIOR TECHNICIAN
I picked up a Pope 6 months ago and I hadn't bothered looking at it, body is good wheels are good but I had obviously been left under a tree for quite a while. Anyway I put it on the bench for a look and the carby was obviously the issue (usually is ) it was filthy inside and out, obviously been run without a filter for quite a while. I pulled the carby and gave it a good clean and put it back on and it started straight up on the pull start but it requires 3/4 choke to keep it running. I will give it a bath in the ultrasonic and see if that fixes the problem. Apart from that the motor runs very well. Other problem is I don't have a catcher for it, so I will have to work out something there

Joined: Jan 2016
Posts: 7,466
Likes: 143
NormK Offline OP
SENIOR TECHNICIAN
Now I have 2 Chondas doing this, start easily run fine on full choke but once you start opening the choke they die. I have cleaned them,half an hour in the ultrasonic ( one was in a bad condition with E10 fuel left in it 7 years ago) but it cleaned up and the main jet came out easily after the ultrasonic did its job. They both run very well but only with the full choke

Joined: Sep 2015
Posts: 2,052
Likes: 146
SENIOR TECHNICIAN & HISTORIAN
Hi Norm,

As we know if the motor only runs with the choke on, the mixtures must be incorrect with the choke off.

I'd be making sure the original air filter and filter housing are installed and someone hasn't installed the wrong
sized carby.

Sometimes I've had carbs where the fuel pipe connector is rusted inside and I've had to clean it out with a drill bit and
wire so the fuel bowl gets enough fuel.

If there's no air leaks and the carby is perfectly cleaned and adjusted and with no fuel supply problems you could
open the main jet up a little.



Cheers
Max.

Joined: Jan 2016
Posts: 7,466
Likes: 143
NormK Offline OP
SENIOR TECHNICIAN
Hi Max,
carbys on both these machines are original, I blow compressed air through the inlet pipe, polish the needle seat, so I don't believe the flow is the problem. All I do with the emulsion tube is blow through it so I can see through it and put the wire brush through all the holes in the tube. Maybe the hole through the tube is restricted even though I can see through it. Both were badly rusted up because of E10 and once I put it through the ultrasonic I got both main jets out without problems

Joined: Sep 2015
Posts: 2,052
Likes: 146
SENIOR TECHNICIAN & HISTORIAN
Hi Norm,

I seem to get a lot of fuel flow problems when the carbys are gummed up ,sometimes are easily cleaned out and
other times takes more work but as we know it's easily checked by hooking up the fuel hose from the carby to tank without the needle, float and fuel bowl to see the rate of fuel flow.

The main jet / emulsion tube does get gummed up a lot ,usually takes me a few minutes to clear it out to the correct
size with 20 amp fuse wire . The fuse wire most of the time won't even push through without some WD40 sprayed
into the jet first ,a lot of the jets have a bigger hole before you get to the main jet and that also can be cleaned out
for unrestricted flow.

I find the fuse wire with a few tiny kinks when worked through the main jet a fair amount cleans them back to standard
but would be a lot quicker if you had the right jet drill even oxy tip cleaners would be quicker to clean the jet out ,when
I've wanted to slightly make a jet bigger I've used oxy tip cleaners.

Cheers
max.

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