fuel but not starting?
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Junior User
Joined: Jun 2006
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From: south jersey
fuel but not starting?
ok, i have a 1979 f250 with a 351m, its a 2v motocraft carb. i can pump the pedal and watch it spray fuel from one jet? into one of the barrels, but it wount start. if i spray starting fluid in it, it starts, but dosnt run... i never did anything with carbs before so this is all new to me, i have no idea whats wrong. this is the only thing holding me back from starting to drive this truck.
any ideas? any help would be greatly appriciated. i have a chiltians manual but its a different carb in the pictures, and there isnt an exploded diagram or anything to help me anyway. not even a diagnosis for crank no start.
any ideas? any help would be greatly appriciated. i have a chiltians manual but its a different carb in the pictures, and there isnt an exploded diagram or anything to help me anyway. not even a diagnosis for crank no start.
Posting Guru
Joined: Sep 2003
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From: Northeast LA
If it's only spraying from one of the nozzles then something is stopping it up. If that is stopped up then the idle circuits are probably stopped up too and thats why it won't crank or stay running. Do a search for 2150 carb and alot of post will come up but I remember one having links to an exploded view of a 2V carb. I hope you get it worked out or you can always do like I did and buy a brand new holley 4412 carb for $250 and that will bolt right in place of your 2150. Good luck.
http://www.autozone.com/az/cds/en_us...rInfoPages.htm
Here is a link to the autozone page the exploded view is almost to the bottom of the page. I'm sure someone else has a better link but that'll do for now.
http://www.autozone.com/az/cds/en_us...rInfoPages.htm
Here is a link to the autozone page the exploded view is almost to the bottom of the page. I'm sure someone else has a better link but that'll do for now.
Last edited by jsutton; Aug 31, 2007 at 04:57 PM.
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Junior User
Joined: Jun 2006
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From: south jersey
well cleaned out the carb, looks like it works now. only thing is it wount start at all now.
i did leave the key on with the engine off all nite before i fixed the carb and the coil was pretty dam hot so maybe i killed the coil? it's origional one for the truck so maybe its time for it to be replaced anyway sence its got new cap rotor plugs and wires.
i did leave the key on with the engine off all nite before i fixed the carb and the coil was pretty dam hot so maybe i killed the coil? it's origional one for the truck so maybe its time for it to be replaced anyway sence its got new cap rotor plugs and wires.
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Junior User
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From: south jersey
i replaced the coil, starts and idles for a few seconds now, then dies. i guess i didnt clean out all the jets? the 2 that spray fuel in when you pump the gas work. maybe there's another on i gotta find?
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Junior User
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From: south jersey
Originally Posted by LxMan1
Have you tried adjusting the mixture screws on the bottom of the carb? Try backing them out a turn or two.
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Joined: Dec 2001
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From: Louisville,Ky.
Sounds like you pumped more junk into the carb. Clean it out and put an inline fuel filter on it.
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Junior User
Joined: Jun 2006
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From: south jersey
took the carb off and cleaned it out again, this time i took it compleatly appart and cleand it. still nothing. later on tho, i got a rebuild kit for like 25$ and did that, now it runs again. it looks like one of the little diaphram pump things wasnt working, and the internal fuel filter was all clogged with stuff too.
thanks for all the help everyone.
thanks for all the help everyone.
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Posting Guru
Joined: Nov 2004
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From: sunny fla sometimes windy
Use some gas line dryer! After a while from condensation, from having a less than full tank. Water will build up in the tank and produce symptoms like you have, Water is not compressible and has a high surface tension if it's getting forced into things (Jets, injectors, rubber parts) It can do a lot of damage not to mention scale rust forming in tanks and lines clogging things up. A couple of bottles of dedicated gas line dryer every now and then is cheap insurance!
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