25 replies to this topic

[miniman86]

didn't reconnect the engine breather, forgot about it, and not too sure as to weather its blanked at carb end or not lol! will check in daylight tomorrow. will also chuck in an inline filter for good measure! any thing else to check after that?

[lrostoke]

Well the engine breather is sounding likely now fingers crossed on that one

[dollysweety88]

ok mate cheers, will let u know how i get on tomorrow!

[miniman86]

sorry was logged on as my girlfriend, will let u know tomorrow how i get on, hopefully from my name on here haha!

[dklawson]

So following your comments, the car has been idle for two years and you're now fitting a carb that has not been on this engine before. The carb was dirty when you got it but you cleaned it up. You also said you have good compression so this implies that when you put the head back on you adjusted the valves. And... you're going to check on all the breather connections.

Does all that sound correct?

Maybe you'll find an open breather line/connection that is responsible for this.

Tell us a bit more about what you did when cleaning the carb. On the HS series carbs there are a number of adjustments that MUST be done when you service them. Presumably you removed some parts to clean this carb and those parts have to be adjusted when installed. Basically, you will need to set the float level, set the needle flush with the bottom of the carb piston, center the jet, and set the jet's initial height so it is two turns down from flush with the bridge inside the carb. Most of these adjustments must be made with the linkages (especially the choke linkage) disconnected and loose. If you didn't make these initial adjustments when you rebuilt the carb (or when you recently installed it) there's no reason to think the settings are anywhere close. Haynes has a carb book for the Weber, SU, and Stromberg carbs that's a good reference for tuning. Burlen publishes a good book on this also. However, most of the basic adjustments of the HS series carbs are fairly well presented in the basic Haynes service manual... at least the Haynes for the Mk1/2 cars.

[miniman86]

just looked on the carb this morning, where the breather would have been on the carb it is blanked off as if there has never been 1 there! also when i took the carb apart i didnt strip the jet out, only took float bowl lid off & cleaned inside float bowl, & the same with the dash pot. there is oil in dash pot also. any other ideas?

[backstreetclassics]

have you tried putting new petrol in the van as the octaine in two year old petrol wont help yr problem . also just check the float bowl again as it could of got some dirt in there from the tank .also make sure there no dirt in the dash pot .if this doesnt help give me a ring and ill pop over and have a look 4 you

[dklawson]

when i took the carb apart i didnt strip the jet out, only took float bowl lid off & cleaned inside float bowl, & the same with the dash pot. there is oil in dash pot also. any other ideas?

Well, since this carb is not really known to you and it has not been completely taken apart, I'd assume it has deposits on the needle and in the jet and its flexible tube. You should also assume once you clean those areas that the carb will need adjusting from scratch.

Since you should assume the carb is not adjusted and set correctly... the easiest thing would be to get a can or two of spray carb cleaner and take the carb apart to the point that you can clean out the inside of the jet (and it's flexible tube) along with cleaning the carb needle itself. Once you are 100% sure that fuel can flow into/through the jet, go through the basic mechanical carb adjustments that follow a rebuild.

[backstreetclassics]

how did you get on 2day ?????

[mini_kel]

Alex everytime you mess around with the carbs, the car doesn`t start. lol

[miniman86]

ok problems solved now, yet another carb, & running perfectly!!