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Re: Bogging Down , Won't Pull Away.
Posted: Thu Apr 13, 2017 11:08 pm
by immylam
I'll give this a try as it is a new inlet I have put on since the rebuild, how exactly do you go about doing the leak test?
Re: Bogging Down , Won't Pull Away.
Posted: Thu Apr 13, 2017 11:40 pm
by Bofs
I useda mountain bike tube. Cut it to suit the distance between the inlet and exhaust stub and jubilee clip it on. Pump by hqnd using a fiit pump. If theres a leak you'll soon know. Mine wouldnt inflate at all. I sprayed soapy water around hiss at the manifold and it showed bubbles at the high stud. Stripped it down and found pin holes in the casting. Sealed with JB WELD and it ran perfectly when rebuilt. Definitely worth a try.
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Re: Bogging Down , Won't Pull Away.
Posted: Thu Apr 13, 2017 11:42 pm
by Bofs
It was an AF manifold too.
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Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 12:00 pm
by sean brady scooters
ARE YOUR GEAR CABLES THE CORRECT WAY AROUND ?...if not you will be setting of in second !
Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 12:18 pm
by Adam_Winstone
^... nice 'outside of the box' idea.
Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 1:59 pm
by mick1
I would have thought an air leak would lean it off and cause it too race, not bog down.......but I may be wrong....
Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 8:14 pm
by whonatic
I've got exactly this problem on an Avanti I rebuilt for my mate. We changed the crank and finally cured (after several attempts) the drive side oil seal failing with a rimini drive side plate.
But now, it really bogs down in first and 2nd and you have to really rev and slip the clutch to get away. Reminds of when I had a Rapido that behaved the same, it was something to do with transfers being too large on that, a design fault. BUT! This ran well before and crank is the same lentgh Rod as before! It's not jetting, it's not cables wrong way round, Antony tambs reconditioned the stator, and it flies in 3rd and 4th!!
I'm out of ideas and it's on my head to sort it !
Sorry to hijack but I need help
Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 8:24 pm
by mick1
whonatic wrote:I've got exactly this problem on an Avanti I rebuilt for my mate. We changed the crank and finally cured (after several attempts) the drive side oil seal failing with a rimini drive side plate.
But now, it really bogs down in first and 2nd and you have to really rev and slip the clutch to get away. Reminds of when I had a Rapido that behaved the same, it was something to do with transfers being too large on that, a design fault. BUT! This ran well before and crank is the same lentgh Rod as before! It's not jetting, it's not cables wrong way round, Antony tambs reconditioned the stator, and it flies in 3rd and 4th!!
I'm out of ideas and it's on my head to sort it !
Sorry to hijack but I need help
Start a new thread and i'll post up some input from my Avanti........
Re: Bogging Down , Won't Pull Away.
Posted: Fri Apr 14, 2017 9:05 pm
by whonatic
mick1 wrote:whonatic wrote:I've got exactly this problem on an Avanti I rebuilt for my mate. We changed the crank and finally cured (after several attempts) the drive side oil seal failing with a rimini drive side plate.
But now, it really bogs down in first and 2nd and you have to really rev and slip the clutch to get away. Reminds of when I had a Rapido that behaved the same, it was something to do with transfers being too large on that, a design fault. BUT! This ran well before and crank is the same lentgh Rod as before! It's not jetting, it's not cables wrong way round, Antony tambs reconditioned the stator, and it flies in 3rd and 4th!!
I'm out of ideas and it's on my head to sort it !
Sorry to hijack but I need help
Start a new thread and i'll post up some input from my Avanti........
Done
Re: Bogging Down , Won't Pull Away.
Posted: Sat Apr 15, 2017 11:32 am
by mr mugello
Is your choke cable right length for carb fitted ?