Carby problems need Help.

[GTS 666]

Finding it difficult to get started after some miner mods the carb is a clone and I put the needles settings back to factor. However this is a clone carb are they the same as the walbro. I have fuel and spark so I think it maybe the carb settings I have used any thoughts would be great thanks.

 

[OuttaLuck]

Finding it difficult to get started after some miner mods the carb is a clone and I put the needles settings back to factor. However this is a clone carb are they the same as the walbro. I have fuel and spark so I think it maybe the carb settings I have used any thoughts would be great thanks.

yes same settings but you may have a airleak

 

[Mike1970]

What were the minor mods? maybe this could be the problem.

 

[GTS 666]

The engine was originally a smartech 3 bolt head. I ran it twice and it wasn't near powerful enough so I put a 23 cy ported head on it matched ported the crank case matched the inlet and exhaust. Turbo modded the crank lightened the piston and flywheel and put a 8000 rpm clutch spring on. I fixed my carby prob tonight I had a walbro 668 that has had hardly any use so I put it on and it started with 3 pulls guess I should have just put it on in the first place. Just thought that the clone carb would be fine since it is basically new and I had it started already with it until I though it would be a good idea to reset the needles to get a good tune but then it wouldn't start. hope to get some run time tomorrow pending the weather.

 

[46u]

I have heard of problems with clone carbs. Have you run this carb before the up grades? On many of the forums I go to those that have the clone vehicles replace them with the Walbro before ever starting.

 

[GTS 666]

Yeah ran it twice was ok I guess just didn't impress me enough. The ports in the smartech head where laughably small very restricted it will never be used again. I thought the carb was ok but I guess it's not as good as the walbro. It will sit aside for parts now.

 

[46u]

The engine was originally a smartech 3 bolt head.

Do you mean 2 bolt as I do not know of any CY with 3 bolts as you said you put a CY top end on it.

 

[GTS 666]

Smartech make there own motor I believe which is close to CY except for the head which is a 3 bolt pattern I know sounds strange. I put a cy 2 bolt head on the smartech bottom end. Very easy mod only need to drill and tap 1 hole. The cy head is night to day compared to the smartechs tiny ports.

 

[46u]

Smartech make there own motor I believe which is close to CY except for the head which is a 3 bolt pattern I know sounds strange. I put a cy 2 bolt head on the smartech bottom end. Very easy mod only need to drill and tap 1 hole. The cy head is night to day compared to the smartechs tiny ports.

Sounds like Smartech run ports the size of the ones on weed wackers. LOL. I had to put bearings in my weed wacker. They did not sell just the bearings they wanted to sell me a whole bottom end for $80. Come to find out the bearings and seals where the same as CY and I had them on hand. So I fixed it for $20 and my time. The ports on it where TINY. Guess this is why a weed wacker put out maybe 1HP and the CY and Zen put out 2.5 hp and up.