Walbro Carb MYSTERY
08-25-2004, 07:20 AM
#1
Walbro Carb MYSTERY
I'm thinking that if you can take the time to do a conversion you're probably as bad as me and will go through old carbs to make them work again. I've got a Walbro carb that is making me want to beat my head on the wall! It's been torn down, cleaned and re-assembled using good diaphrams/gaskets and getting the needle lever set right. I start with 1 1/2 turns out on both the high and low needles. This thing pours gas to the engine...it literally drips out of the carb. I've torn down and made work more than my fair share of Walbros, Tillotsons, Zamas, etc., yet I have NEVER had this much agony with a carb. Any ideas on just WTH might be causing all of the grief here? I was told by another guy to seal the 'welch plug' with fingernail polish. OK, I went into it, yet again, yesterday and sealed all three 'plugs' on the needle/seat side of the carb and I also sealed the screen side of the brass needle seat. I'm going to give it a go today...hopefull it works! I'm open for ideas should the sealing efforts fail...yea, up to and including using it for a fishing weight.
08-25-2004, 09:54 AM
#3
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RE: Walbro Carb MYSTERY
ORIGINAL: Gene Chernosky
...including using it for a fishing weight.
...including using it for a fishing weight.
Seriously, take a quick search on Ebay should net you many offers of Walbro carbs on the cheap. Spending hours working on something that you can get a $15 replacement is not frugality - it's masochism.
08-25-2004, 12:48 PM
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RE: Walbro Carb MYSTERY
If everything is set up right including the lever arm according to specs., which should be set level with the inner carb body, and the gaskets, diaphrams in the proper order, The only thing left to leak is the rubber tipped needle valve connected to the lever arm. They do wear out too. Also make sure there is nothing on the needle seat.
11-06-2006, 08:59 AM
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RE: Walbro Carb MYSTERY
ORIGINAL: Gene Chernosky
I'm thinking that if you can take the time to do a conversion you're probably as bad as me and will go through old carbs to make them work again. I've got a Walbro carb that is making me want to beat my head on the wall! It's been torn down, cleaned and re-assembled using good diaphrams/gaskets and getting the needle lever set right. I start with 1 1/2 turns out on both the high and low needles. This thing pours gas to the engine...it literally drips out of the carb. I've torn down and made work more than my fair share of Walbros, Tillotsons, Zamas, etc., yet I have NEVER had this much agony with a carb. Any ideas on just WTH might be causing all of the grief here? I was told by another guy to seal the 'welch plug' with fingernail polish. OK, I went into it, yet again, yesterday and sealed all three 'plugs' on the needle/seat side of the carb and I also sealed the screen side of the brass needle seat. I'm going to give it a go today...hopefull it works! I'm open for ideas should the sealing efforts fail...yea, up to and including using it for a fishing weight.
I'm thinking that if you can take the time to do a conversion you're probably as bad as me and will go through old carbs to make them work again. I've got a Walbro carb that is making me want to beat my head on the wall! It's been torn down, cleaned and re-assembled using good diaphrams/gaskets and getting the needle lever set right. I start with 1 1/2 turns out on both the high and low needles. This thing pours gas to the engine...it literally drips out of the carb. I've torn down and made work more than my fair share of Walbros, Tillotsons, Zamas, etc., yet I have NEVER had this much agony with a carb. Any ideas on just WTH might be causing all of the grief here? I was told by another guy to seal the 'welch plug' with fingernail polish. OK, I went into it, yet again, yesterday and sealed all three 'plugs' on the needle/seat side of the carb and I also sealed the screen side of the brass needle seat. I'm going to give it a go today...hopefull it works! I'm open for ideas should the sealing efforts fail...yea, up to and including using it for a fishing weight.
hope this helps
11-06-2006, 05:07 PM
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RE: Walbro Carb MYSTERY
ORIGINAL: Flypaper 2
Don't know how it would pressurize the tank. Collapse it maybe, but the motor would quit first.
Don't know how it would pressurize the tank. Collapse it maybe, but the motor would quit first.
11-06-2006, 05:59 PM
#9
RE: Walbro Carb MYSTERY
I picked up several engines this summer. Most are very easy to get going. One thing I did NOTICE is one engine had a carb that when i was going to pull the fuel line off and repalce it....the little brass inlet pressed in carb was loose. I cut old line off and tapped the fitting back down in place. Be sure to support the carb correctly when you do this. I never would have noticed the brass nipple being loose...but the line was kinda stuck on it. Like RCIGN says "do not asume anything" He is right!!! Capt,n
