philhoward
|
| posted on 10/6/08 at 08:50 AM |
|
|
Air Leek/running problems
I think that I might have an air leek on my inlet manifold. All bolts are tight but the carb on no. 4 cylinder is drawing in a lower amount of air
compared to the rest of the carbs (I am running twin 45 webers on a 2lt Pinto). Also the idle mixture screw on no. 4 does not do anything. I have
stripped the carb down and all jets and passageways are clean. When accelerating the car runs OK. Also if you pull the spark plug lead off no. 4 at
tickover it makes no difference. There is a good healthy spark there.
Is there an easy way of checking for an air leek, or do have you any ideas what the problem might be?
|
|
|
|
|
theconrodkid
|
| posted on 10/6/08 at 08:59 AM |
|
|
spray wd40 or similar around the joints,when it finds a leak and gets sucked in the revs will rise
who cares who wins
pass the pork pies
|
|
|
adithorp
|
| posted on 10/6/08 at 11:48 AM |
|
|
WD-40 or carb cleaner will show it but I prefer to take the nozzel of a butane burner and push a length of hose on. Then feed gas around the carbs and
manifold to find the leak. The revs will change when you find it. A lot more controlable and less messy than WD-40.
adrian
|
|
|
russbost
|
| posted on 10/6/08 at 12:12 PM |
|
|
Just bung a bit of rubber tube or washer tubing in your ear & listen around the suspect manifold area, when you find the leak it's really
obvious - massive sucking/hissing noise.
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
britishtrident
|
| posted on 10/6/08 at 02:00 PM |
|
|
Do a compresion test & check the valve cleances.
It is also possible you have twisted the spindle in the carb
|
|
|
philhoward
|
| posted on 12/6/08 at 07:32 PM |
|
|
Thanks for your advice, I found an airleak, replaced the gasket and it is running fine now
|
|
|
