88 sami

When I got sammy a month ago it would start and idle for a 20 seconds then die. After sitting for a few minutes it would start again and stall shortly after.

Replaced carb with a Harley cv 38mm carb Jets 200 and 45.
Replaced fuel filter plus added a inline fuel regulator set at 1.5

Will start with aid from starting fluid but stall as soon as you stop spraying.

I observe the clear fuel filter "I installled" fill with fuel but when I start to crank it over the fuel from the filter with completly get drained. Once I stop turning the engine the filter takes 30 or so seconds to slowly fill back up with fuel.

Is that normal? "I dont think it is" Any ideas on what the problem may be?

Thanks for all the help in advance. I will appreciate all ideas and info.

Any ideas fellow forum members?

I blew out the gas lines with compressed air and they seemed to be free of blockages. Im puzzled at where to go from here.

Please help all info/help/ideas will aid in getting this issue solved.

Thanks RR

Sounds like a weak fuel pump that's where I would start looking first

take the gas cap off and see if it runs,make sure that you did not plug the gas tank vent off under the hood.

Can the mechanical ones actually loose performance over time? I thought they were either good or completly bad no in the middle. Is the simpliest way to test a mechanical one with a in line pressure gauge or is there a better way?

Thanks for the reply I was getting worried I was on my own

they go bad, pull the dip stick first and smell for gas on it and then unhook the fuel line before the reg. and put a hose on it and run it into a can and have a friend crank the engine over for you and see how it looks, the check valves do stick in them some times or the springs in them will rust out.

mrfuelish: when I got the sammy the hose going  to the tank was cut in half and no lid on. Instead a wash rag was jammed in the main tube to prevent garbage getting into the tank. I blew through both lines with the air compresser and no resistance was present.

noob quesstion: Dipstick for the gas? and the hose before the regulator? I have the main gas line goin from the tank to the pump. The pump has 1 input, an output back to the tank I believe and one that goes to my carb. I have a auto zone regulator between carb and pump and a fuel filter between tank and pump on the main line.

mrfuelish: when I got the sammy the hose going  to the tank was cut in half and no lid on. Instead a wash rag was jammed in the main tube to prevent garbage getting into the tank. I blew through both lines with the air compresser and no resistance was present.

Ahh, the rest of the story!

The tank does need to have some venting! Otherwise, a vacuum will build inside the tank ...

noob quesstion: Dipstick for the gas?

Pretty sure that was a suggestion to find out if the OIL dipstick had a gasoline smell ....

ya the dip stick on the engine, when the diaphragm in the pump goes it will leak gas into the engine. the lines that come from the tank, the one with the fuel filter goes to the fuel pump, the other one should run up beside it and not hook to anything if your charcoal canister is missing, does this make sense?

yep no smell of gas on dip stick just clean oil. As for tank Ive tried it with was rag in or completely out with no restrictions, no difference. I planned on getting a small aftermarket fuel cell anyways maybe its time. Isn't the stock mechanical pump suppose to push around 2psi? I dont have a gauge so ill have to go pick one up. Wish there was a way to get a small in linen electric fuel pump to rid myself of this mechanical mystery to me

the stock pumps are good I would just replace it.

ya the dip stick on the engine, when the diaphragm in the pump goes it will leak gas into the engine. the lines that come from the tank, the one with the fuel filter goes to the fuel pump, the other one should run up beside it and not hook to anything if your charcoal canister is missing, does this make sense?

Yep charcoal is still there, Is it necessary though?

Ill have to see what one cost from the zone or something like that. Anything in replacing one? Its such a simple system I'm surprised I'm having such an issue with it. Besides running a aftermarket fuel cell with a new mechanical pump theres not much more it can be.