cu. wont climb hills

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moggymorgan
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cu. wont climb hills

Post by moggymorgan »

hi guys,
i am having a major problem. first things first. cu engine on twin solex carbs,mech fuel pump.the van runs well on the flat and gives me no probs.as soon as i hit any kind of hill it hesitates and slows down to about 20 mph.i have checked for air leaks and changed the filter underneath by the tank and the one in the fuel pump.any help would be great thanks.
john & jenny
1979, cu devon.

Tysoe
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Re: cu. wont climb hills

Post by Tysoe »

Mine doesn't like hills and will go down to about 30mph if the hill's long enough.

Just thought that was the nature of the beast! :roll:
1981 2.0 CU camper

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ermie571
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Re: cu. wont climb hills

Post by ermie571 »

check the accelerator, when foot to floor, is fully opening throttle


I nearly sold my air cooled as the hill to and from work was very uncomfortable. Then during a service I reved it foot flat to the floor, and John found nearly and inch of slack in the cable.... :-) Happy days, adjusted and got nearly 40 mph all the way up the steep hill from a flying start!
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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks I will check the cable.i will recruit jen foe pedal duty.
john & jenny
1979, cu devon.

Tysoe
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Re: cu. wont climb hills

Post by Tysoe »

Thanks will check mine too.

My legs not that long though so will recruit a brick :mrgreen:

I have no friends :shock:
1981 2.0 CU camper

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Feel sure its a fuel prob as it realy struggles and coughs on hills . don't know what to try next.
john & jenny
1979, cu devon.

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CovKid
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Re: cu. wont climb hills

Post by CovKid »

Beyond cable movement, if it runs fine at a wide throttle opening on motorways, its not likely to be fuel starvation. Could be timing, if its not simply just a tired engine with low compression.
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BOXY
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Re: cu. wont climb hills

Post by BOXY »

When my van had a wrecked valve seat it would happily get up to 70 on the flat, but wouldn't pull up any steep hills. Check the compression and see if it points towards one cylinder not coming to the party.

Since I got the head replaced the van can cope with any hills I point it at. A couple of weeks ago it made it up Llanberis Pass in both directions in second and even managed a mad hill in Aberystwyth 1 in 4 in first from a stand start. Check it out on Street View.

https://www.google.co.uk/maps/@52.40969 ... oni1Gg!2e0" onclick="window.open(this.href);return false;

Street View doesn't really do it justice.
2ltr Aircooled CU with twin Solex's & originally a 009 dizzie, but now back to standard.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks for all the help guys. Now I have some avenues to explore. :ok
john & jenny
1979, cu devon.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks for all the help guys. Now I have some avenues to explore. :ok
john & jenny
1979, cu devon.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks for all the help guys. Now I have some avenues to explore. :ok
john & jenny
1979, cu devon.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks for all the help guys. Now I have some avenues to explore. :ok
john & jenny
1979, cu devon.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

Thanks for the help guys.got some things to try now.
john & jenny
1979, cu devon.

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moggymorgan
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Re: cu. wont climb hills

Post by moggymorgan »

So sorry, tablet has gone mad
john & jenny
1979, cu devon.

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Re: cu. wont climb hills

Post by CovKid »

Nice to get so much praise but you can delete the posts you don't want :D
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