800 ford

[onestop]

trouble with starting. starts and runs perfect sometimes.sometimes wont.can choke till gas runs out carb but plugs still dry.have rebuilt carb and repalaced all ing. parts ponits, plug,coil etc. thanks for any help.

 

[awhtc]

While you're throwing new parts at it you may as well go ahead and add a new ignition switch. They are known to corrode internally and reduce or stop power to the coil.

 

[Dean]

If you crank the engine with the choke closed but it does not flood, you have fuel flow issues.

Have you checked the fuel strainers?

Dean

 

[onestop]

getting gas to carb.choked till gas runs out carb. plugs will be dry.after cranking awhile it will hit and run like its flooded.smooths out and runs great untill i shut it off then it does same thing.

 

[onestop]

used jumper wire to bypass switch no help.

 

[Dean]

If you are convinced that you do not have fuel flow issues (From the available information, I am not.), you have weak spark.

Dean

 

[souNdguy]

what's yer spark look like?

have you done a compression test?

 

[old]

Pull your air cleaner tube off and put your hand over the intake of the carb and spin it over. You should get a good suction on your hand and gas also. If you do not get both you have either a compression problem or a fuel problem

 

[onestop]

i did a compression check it has from 132 to 140 psi per cyl.the spark looks good.

 

[souNdguy]

air cleaner clean?

 

[onestop]

pipe to air cleaner removed.to check for suction and gas.still same deal.

 

[souNdguy]

interesting..

 

[GT65]

You should have no inline filter between tank shut-off and your sediment bowl.Tank and carb have screens.Those paper in plastic filters become soft over time and remember there is no fuel pump it"s gravitiy fead. Those filters when they get soft can create a surge effect,no gas then lots of gas, no gas then etc...........Also make your gas line as straight DOWN to the tank as possible,eliminate or lessen SAG areas as much as possible.Also,make sure your gas cap is vented
Please report back!!
GT65