Club 80-90 Forums

As the title, 2 lt cu Aircooled, been running fine then going up steepish hill lost power had to pull over and switch off, started up with a bit of turning over on full throttle but still running the same a bit lumpy, got me home though in first and second though up hills. Checked the plugs cylinder 2 and 3 very wet so replaced plugs leads dizzy cap and rotor arm, not a lot different really. Running the normal solex carbs which i refurbed about 300 miles ago. Theres no smoke or rattles, anyone any ideas what to try next? Thanks

Fuel filter, crap in carb(s)?

Connections of the vacuumsystem? Had the same symptoms a few years back. Under load the connections of the vacuumhoses can break loose. Another thing to look for is the small plug on the back ( ie front faced) side of your carb.

Make sure the balance pipe between the carbs is in good condition and the rubber connectors are in good condition with no cracks

Thanks will check those things out today, although relplaced vacuum pipes recently, report back later.

Hello,

All of the above....

Has the tickover speed changed..

What ignition are you using..Hell effect, Power-spark, P and C....

Cordialement,

Hi sarran, no tick over still the same, original ignition as far as i know, thanks.

paperhouselad wrote: Checked the plugs cylinder 2 and 3 very wet

Fuel wet or oil wet ?

I'm going to assume fuel, so pull those plug leads off and make sure there's a nice blue spark at each plug

Hi checked carrera, good spark,.

Hi there,
I had a similar problem in my Aircooled van a while back and just to reiterate Tobydog's suggestion, cleaning the fuel filter and crap out of the carbs did the trick.
Good luck.
Julia

No dirt in the carbs, put some different ones on still much the same, prob still got original coil and distributor on, might treat it to a powerspark set of these, are these any good /recommended? Tia.

Well, you can take the Kwik Fit approach, but it's an expensive route to diagnosis.

I would focus on the symptoms you have. Wet plugs on 2 & 3. Now, they are different cylinder banks and different carbs, therefore unlikely to be a sudden problem with a carb.

Plugs wet with fuel means no ignition, but you say there is a good spark. Did you test the spark with the same plugs, or did you leave them in the heads and use different plugs ?

Swap the plugs over, do the wet spark plugs follow the spark plugs or stay with the cylinder ?

Did you check the balance pipe / hoses ?

Hello,

paperhouselad wrote:No dirt in the carbs, put some different ones on still much the same, prob still got original coil and distributor on, might treat it to a powerspark set of these, are these any good /recommended? Tia.

Powerspark every time...less than the cost of a hall sensor and amp.

Use Simon BBC on E bay



Go for SVDA kit with coil and dizzy

A video to help..

https://www.youtube.com/watch?v=KkyBAMMHpa4" onclick="window.open(this.href);return false;

Fit and forget....cheap enough to carry a spare..( I do, and it has been used many times to sort other peoples break downs.. )

Cordialement,

Brilliant sarran, thanks, am on it now, keep you posted.

Hi sarran, found the exact details as you kindly posted from simon bbc on ebay, the item no is 131644163600 but when i enter my van details it says " it does not fit you vehicle" confused now can't find any saying for a t25, cheers john.