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Engine cuts out under load
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metoooo
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PostPosted: Fri Dec 25, 2020 6:03 am    Post subject: Engine cuts out under load Reply with quote

Hi. My 1600cc twin carb engines starts recentelly to cut-off under load at high gears. When i rev it up in standing, it works perfect. I've replaced spark plugs and adjust the ignition, carbs and valves, but the problem stays. Any sujestions how to solve this issue? Could bad fuel pump cuase this issue?
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gt1953
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PostPosted: Fri Dec 25, 2020 6:44 am    Post subject: Re: Engine cuts out under load Reply with quote

Try replacing the condenser. I also had an issue like that, swapped out the whole distributor with spare one. Then one component at a time. It was the condenser .
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metoooo
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PostPosted: Fri Dec 25, 2020 8:10 am    Post subject: Re: Engine cuts out under load Reply with quote

gt1953 wrote:
Try replacing the condenser. I also had an issue like that, swapped out the whole distributor with spare one. Then one component at a time. It was the condenser .


The condencser only have 2,000 km on it, but i'll replace it anyway. Hope it solve the problem. Thanks
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vwfye
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PostPosted: Fri Dec 25, 2020 9:18 am    Post subject: Re: Engine cuts out under load Reply with quote

Condensor not condensing...
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Mike Fisher
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PostPosted: Fri Dec 25, 2020 12:43 pm    Post subject: Re: Engine cuts out under load Reply with quote

Plugged up fuel sock in the gas tank.
All the crud will settle around the fuel sock.
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gt1953
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PostPosted: Fri Dec 25, 2020 2:10 pm    Post subject: Re: Engine cuts out under load Reply with quote

Yup clogged fuel filter would cause it to run out of fuel under load.
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Bobnotch
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PostPosted: Sat Dec 26, 2020 12:59 pm    Post subject: Re: Engine cuts out under load Reply with quote

A coil going bad will do this too. Especially under load. I've had that happen to me back in 2004 right be going to the Invasion. Took me a couple of days to find it (went thru every system on the engine), because the engine would idle perfectly, but under load would run like crap. In my case it was a German blue coil trying to die (the last thing I checked). Swapped it with a German black coil, and everything was fine again.
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Hokie87
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PostPosted: Tue Jan 12, 2021 7:28 am    Post subject: Re: Engine cuts out under load Reply with quote

I had the same problem. After reading this thread, I put in a new condenser and it's fixed.
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QRP
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PostPosted: Tue Jan 12, 2021 9:36 am    Post subject: Re: Engine cuts out under load Reply with quote

Also check fuel tank vent, could be clogged.
Easy to check, just drive it with the gas cap off.
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metoooo
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PostPosted: Tue Jan 12, 2021 9:51 am    Post subject: Re: Engine cuts out under load Reply with quote

It was the condenser... problem solved
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vwfye
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PostPosted: Tue Jan 12, 2021 10:12 am    Post subject: Re: Engine cuts out under load Reply with quote

It used to be that condensors either worked, or did not. These days partially failed condensors seem to be the new norm.
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