Hi just wondered if anyone can help, been workin on poppy a while now and I'm nearly on the rd, just that when the engine is running and comes up to temp it has a very poor acceleration and seems gutless unless I rev it hard, it has new coil leads plugs, cap, points and condenser, I've done a compression test today and it's all good at 120 psi on all cylinders, also it runs lumpy on no choke but revs through it.....when you come to pull off its a real pain so it needs sorting before my mot,,,, I was guessing carb or around that area...any ideas will be great full..... It's a 1973 1752 engine ...
Poor acceleration
- Thread starter poppyvanfan
- Start date
Sounds like a fuel problem. Check the system for blockages 
"You,re only supposed to blow the bloody SLIDING doors off"
"You,re only supposed to blow the bloody SLIDING doors off"
Took the tank off and cleaned/painted it and re installed it...still the same ..
Go through the fuel pump and carb as well.
"You,re only supposed to blow the bloody SLIDING doors off"
"You,re only supposed to blow the bloody SLIDING doors off"
Will try that thanks
It's an su carb and yes an inline filter that's clean ...will be trying again this afty . Thanks
cleaned carb and new filter..the same....will try that panky where is it ??
As far as I know only an SU or a Stomberg have dashpots, It's right on top of the dome on the carb. Unscrew the big black plastic nut and pull the plunger out completely, pour oil into the tube inside so it reaches the top of the tube - you wont need much, and push the plunger back in. You will feel quite a resistance as you push it back in. Ideally use auto transmission or power steering fluid but engine oil will do if you haven't got any.
Summer's Coming
Summer's Coming
You may have a manifold gasket leak or a timing advance issue. Check the vacuum pipe from manifold to dizzy for splits and have a look at the auto advance unit in the dizzy as it may be sticking
"You,re only supposed to blow the bloody SLIDING doors off"
"You,re only supposed to blow the bloody SLIDING doors off"
is the hand brake still on? check accelerator at pedal ?
Commer Dandy by Dandy Caravans
The Colonel Mustard
Commer Dandy by Dandy Caravans
The Colonel Mustard
Yes I got full throttle use, the flat spot is at the bottom of the rev range, I'll try these other few suggestions and get back you all, thanks
Fitting a new carb tomorow of my mates minx to see how that goes....let's hope it works as its in for test next week
Had this problem a few years back with a Mini,
Turned out to be a partially blocked exhaust/muffler with carbon. Washed it out with a 1/2 gallon of paraffin and as good as new.
Wherever we roam,
we still call our Commer home!
www.commervanoztour.blogspot.com
Turned out to be a partially blocked exhaust/muffler with carbon. Washed it out with a 1/2 gallon of paraffin and as good as new.
Wherever we roam,
we still call our Commer home!
www.commervanoztour.blogspot.com