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roscopeco10
Samba Member
Joined: September 11, 2011
Posts: 35
Location: DEVON
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 Posted: Tue Apr 24, 2018 12:53 am Post subject: Re: Poor running 1641 TP |
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A guy walks in to a shop.... doesnt even see all this stuff as its out the back just sees a counter lol!
Clear heater tubes and pre heater exhaust outlets, new manifold boots, new manifold seals. Filters are new and new carb will only just to start ticking over when its really warmed up (maybe 20/30 mins)
Runs lovely while chokes on and when any throttle is given.
Will run a smoke test on the carb again to prove it can't be a third carb only managing 100 miles, if carb is at fault again hopefully will get something back towards a decent replacement.
What is the brake boost part that was mentioned, someone said it might be worth a check?
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73 Dormobile now a 73 crew cab & 79 crew cab, ping me anything crew cab related! |
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TomWesty
Samba Member
Joined: November 23, 2007
Posts: 3482
Location: Wyoming,USA
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| Posted: Tue Apr 24, 2018 6:13 am Post subject: Re: Poor running 1641 TP |
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If your bus has power assisted front disk brakes then it has a hose that comes off the intake manifold and goes to the brake servo. Disconnect it at the manifold and plug the hole in the manifold with a rubber stopper or such. Now carefully (because your brakes take a lot more leg power now) drive it and see if it does better. If it is better, you have a vacuum leak either in the hose or the servo itself.
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If you haven't bled on them, you haven't worked on them.
Visit: www.tomcoryell.com and check out my music! |
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roscopeco10
Samba Member
Joined: September 11, 2011
Posts: 35
Location: DEVON
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| Posted: Tue Apr 24, 2018 8:47 am Post subject: Re: Poor running 1641 TP |
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No hoses attached for power assistance (although I do have front disc brakes)
The 2 outlets on the manifold are totally sealed off.
Will perform a UV smoke test in the next day or two which will hopefully show any air in leak from cylinders to carb.
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73 Dormobile now a 73 crew cab & 79 crew cab, ping me anything crew cab related! |
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roscopeco10
Samba Member
Joined: September 11, 2011
Posts: 35
Location: DEVON
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| Posted: Thu Apr 26, 2018 8:21 am Post subject: Re: Poor running 1641 TP |
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Ok so 3rd Bocar carb has done the most miles out of the 3 new ones, almost 100miles. Did a smoke test and it was pouring out of both sides of the top spindle and the auto choke on the right.
Supplier mentions he has never had issues like this and for me to return 3 in a row seems ridiculous.
I can't think of anything that I could be doing which is destroying the seals or bushes, especially only after a handfull of miles!
This would explain why everything starts out ok each time I put a new carb on, ticks over when choke drops out etc. then after a short amount of time the ticking over becomes a problem!
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73 Dormobile now a 73 crew cab & 79 crew cab, ping me anything crew cab related! |
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