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Dream - Hard starting cold - easy starts warm?

Fuel System: Gas (Petrol) tanks, Carburators
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Nick
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Dream - Hard starting cold - easy starts warm?

Post by Nick » Tue Jun 27, 2017 4:57 pm

Choke seems to be working fine, float level correct, bike runs well otherwise.

Round float bowl. Took carb apart, soaked in lacquer thinner, nice and clean.

Responds to adjustment in air screw but is very sensitive - 1/4 turn either way makes a big difference.

Anyway, feels like it's too lean when starting cold (even with choke ON) so I was wondering if a richer pilot jet might improve things. (Don't know what size is in there now)

Advice appreciated.
Do what you've always done and you'll get what you've always had.

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brewsky
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Post by brewsky » Tue Jun 27, 2017 6:04 pm

Are you cranking the engine first in the prime switch position before using the the run position to start?
66 dream, 78 cb750k, 02fz1, 09 wing

Nick
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Joined: Thu Oct 15, 2009 2:03 am
Location: Paradise

Post by Nick » Tue Jun 27, 2017 11:38 pm

I've tried priming it by kicking it a few times with the ignition OFF and choke/fuel ON prior to turning the ignition on, which seemed to help a bit in the past, but no more.

Wondering if the spring on the choke bypass plate is too weak, causing the choke to be ineffective. Perhaps it would help to fix the plate closed, and then adjust the choke manually as needed once it starts.

A small-bore Amal concentric would be nice, as it has both a tickler and a choke.
Do what you've always done and you'll get what you've always had.

LOUD MOUSE
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Post by LOUD MOUSE » Wed Jun 28, 2017 4:53 am

As said back in the 60's.

"Your carb problems are in direct proportion to the adjustmant of the points". ..................lm
Nick wrote:I've tried priming it by kicking it a few times with the ignition OFF and choke/fuel ON prior to turning the ignition on, which seemed to help a bit in the past, but no more.

Wondering if the spring on the choke bypass plate is too weak, causing the choke to be ineffective. Perhaps it would help to fix the plate closed, and then adjust the choke manually as needed once it starts.

A small-bore Amal concentric would be nice, as it has both a tickler and a choke.

Nick
honda305.com Member
Posts: 144
Joined: Thu Oct 15, 2009 2:03 am
Location: Paradise

Post by Nick » Wed Jun 28, 2017 8:41 pm

Thanks lm, that fixed it. Dang points went an' closed up on me while I wasn't lookin'!
Do what you've always done and you'll get what you've always had.

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Thu Jun 29, 2017 5:32 am

You are welcome.
Happy to help. ................lm

Nick wrote:Thanks lm, that fixed it. Dang points went an' closed up on me while I wasn't lookin'!

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