MGB & GT Forum
H-4 SU Carb. Choke adjustments for cold weather.
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This topic is about my 
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Dec 13, 2017 08:32 AM
Top Contributor
 Joined 12 years ago
12,764 Posts
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(you should probably post in the MGA section - folks there are a lot friendlier... 
)
For almost anything knowable about the MGA (most of which also applies to other MG's, too), peruse the MGA Guru's Tech pages. For example: http://www.mgaguru.com/mgtech/carbs/carb.htm
One other thought is - how old is the gas in the tank? Most gas stations have slightly different formulations for summer & winter gas. And, today's gas doesn't store well. I've experienced gas that seems to go stale in a few weeks.
Eric Russell ~ Mebane, NC
1961 MGA #61, 1981 Alfa Romeo GTV6, 1984 Alfa Romeo Spider, 1991 Honda ST1100
)
For almost anything knowable about the MGA (most of which also applies to other MG's, too), peruse the MGA Guru's Tech pages. For example: http://www.mgaguru.com/mgtech/carbs/carb.htm
One other thought is - how old is the gas in the tank? Most gas stations have slightly different formulations for summer & winter gas. And, today's gas doesn't store well. I've experienced gas that seems to go stale in a few weeks.
Eric Russell ~ Mebane, NC
1961 MGA #61, 1981 Alfa Romeo GTV6, 1984 Alfa Romeo Spider, 1991 Honda ST1100
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Dec 13, 2017 11:56 AM
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 Joined 14 years ago
7,461 Posts
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 Great White North, QC, Canada
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Dec 13, 2017 01:56 PM
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Joined 12 years ago
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Ron,
Yes the MGA chaps could probably help a bit more. The majority responses here is not helping you at all , (HS & HIF type related responses).
I am quite familiar with the H type and the choke adjustments.
You may only be getting enrichment on the one carburetor which is usually not enough. Take a look at the link joining the two choke levers. (below) This is adjustable (a bit of a fiddle) but ensure that both jets are dropping at the same amount when you pull the choke cable.
Also verify that the oil in the dampers is not too thick.
B
Life's most persistent and urgent question is, "What are you doing for others?"
Edited 2 time(s). Last edit at 2017-12-13 02:19 PM by riley1489.
Yes the MGA chaps could probably help a bit more. The majority responses here is not helping you at all , (HS & HIF type related responses).
I am quite familiar with the H type and the choke adjustments.
You may only be getting enrichment on the one carburetor which is usually not enough. Take a look at the link joining the two choke levers. (below) This is adjustable (a bit of a fiddle) but ensure that both jets are dropping at the same amount when you pull the choke cable.
Also verify that the oil in the dampers is not too thick.
B
Life's most persistent and urgent question is, "What are you doing for others?"
Edited 2 time(s). Last edit at 2017-12-13 02:19 PM by riley1489.
Attachments:
BH_H_link choke.jpg 45 KB
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Dec 13, 2017 02:39 PM
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Joined 14 years ago
7,461 Posts
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Great White North, QC, Canada
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Dec 13, 2017 06:20 PM
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Joined 12 years ago
26,301 Posts
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In reply to # 3644945 by barry s
Bruce - I now see that I misread the Subject. I read HS4s
No worries!
and the original post.
you were not alone, and not particularly uncommon on this forum.
B
Life's most persistent and urgent question is, "What are you doing for others?"
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