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 1980 Honda express Sr won't start 
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Scooterologist

Joined: Tue Sep 15, 2015 8:24 pm
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Post 1980 Honda express Sr won't start
So I bought my girlfriend a little blue and white Honda express. The thing is cute but it has an oil leak and if it sits for a couple of days it takes 20-30 kicks to get going...anyways I did an oil pump delete and I cleaned the carb and it fired right up? I waited two days and tried starting it any it sucked.... Not sure where to start for replacing stuff and getting it working. Any advice would be great!


Sat Sep 19, 2015 7:17 pm
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Post Re: 1980 Honda express Sr won't start
new spark plug?

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Sat Sep 19, 2015 7:20 pm
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Post Re: 1980 Honda express Sr won't start
I'm gonna assume that's got a manual choke...everything there working properly? Could be spark plug like Zumike said, too.

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Sat Sep 19, 2015 9:06 pm
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Scooterologist

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Post Re: 1980 Honda express Sr won't start
The choke on these things is super super weird. I want to delete the choke but I'm not entirely sure how. I think it would be awesome to have a different carb that has a manual choke...


Sun Sep 20, 2015 6:59 am
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Post Re: 1980 Honda express Sr won't start
Does that mean it's got an auto-choke? Have you checked that it's working like it should?

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2003 Zuma
(tuning)
Top Performances Trophy Black Edition 70cc
Stage6 19mm PHBG (38pj/84mj/W7 1 lean)
Motoforce derestricted intake
Stock airbox, UNI filter, snorkel removed
Stage6 HPC 10mm crank
Stage6 Pro Replica, derestricted
Malossi MHR Overrange (24.3g)
Malossi 107mm Delta Clutch (yellow Malossi springs)
Malossi 107mm MHR Wing Bell
Malossi Yellow Contra Spring
Malossi Torsion Controller
Top Performance Reed Block and CF Reeds
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Stage 6 F1 Mirrors
Stage 6 14/42s
NGK BR9HS
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LEDGlow Underglow Kit


Sun Sep 20, 2015 7:44 pm
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Scooterologist

Joined: Tue Sep 15, 2015 8:24 pm
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Post Re: 1980 Honda express Sr won't start
it has some sort of auto choke.. I have no idea how it works, I really want to just put a different carb on that has a manual choke and get rid of all the tubes... When i tear it down again ill let you know! and take pictures!!


Mon Sep 21, 2015 5:41 am
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Post Re: 1980 Honda express Sr won't start
That's one thing I thought I would miss before I started rebuilding...the ease of the autochoke. Now that I've got manual choke and it starts first kick, I don't miss it even a little bit.

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2003 Zuma
(tuning)
Top Performances Trophy Black Edition 70cc
Stage6 19mm PHBG (38pj/84mj/W7 1 lean)
Motoforce derestricted intake
Stock airbox, UNI filter, snorkel removed
Stage6 HPC 10mm crank
Stage6 Pro Replica, derestricted
Malossi MHR Overrange (24.3g)
Malossi 107mm Delta Clutch (yellow Malossi springs)
Malossi 107mm MHR Wing Bell
Malossi Yellow Contra Spring
Malossi Torsion Controller
Top Performance Reed Block and CF Reeds
RFY Shock
Stage 6 F1 Mirrors
Stage 6 14/42s
NGK BR9HS
Michelin Boppers
Trail Tech Vapor
LEDGlow Underglow Kit


Mon Sep 21, 2015 7:46 pm
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Scooterologist

Joined: Tue Sep 15, 2015 8:24 pm
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Post Re: 1980 Honda express Sr won't start
So the only way to get this thing to manual choke would be to get a new carb correct?


Tue Sep 22, 2015 5:42 am
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Post Re: 1980 Honda express Sr won't start
It probably depends on the carb...any info on what kind it is? Or the manufacturer?

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2003 Zuma
(tuning)
Top Performances Trophy Black Edition 70cc
Stage6 19mm PHBG (38pj/84mj/W7 1 lean)
Motoforce derestricted intake
Stock airbox, UNI filter, snorkel removed
Stage6 HPC 10mm crank
Stage6 Pro Replica, derestricted
Malossi MHR Overrange (24.3g)
Malossi 107mm Delta Clutch (yellow Malossi springs)
Malossi 107mm MHR Wing Bell
Malossi Yellow Contra Spring
Malossi Torsion Controller
Top Performance Reed Block and CF Reeds
RFY Shock
Stage 6 F1 Mirrors
Stage 6 14/42s
NGK BR9HS
Michelin Boppers
Trail Tech Vapor
LEDGlow Underglow Kit


Tue Sep 22, 2015 4:45 pm
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Location: Iowa, USA
Post Re: 1980 Honda express Sr won't start
Its a vacuum system controlled by the cylinder head temp. You can use regular 3/16 ball valve to manually control it. Start by replacing all the fuel and air lines.


Fri Nov 10, 2017 4:49 am
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