There was also mention of the coil overheating and degrading the spark which is a possibility, but doesn't seem as likely to me as a fuel delivery problem. Start by putting cold water on the fuel lines and fuel pump. That will be today's project as a new fuel pump is about 60 bucks. Propane tanks don’t get real ‘vapor lock’ but they can have issues starting due to firing things up in the wrong order, or getting too hot. For the most part, you can fix vapor lock without the help of a professional repair shop. Sputtering, I did notice that one suggestion was cleaning out the brass filter on the fuel pump with brake solvent. ![]() I have also taken the fuel pump apart and the diaphragms are both intact. Fixing Vapor locked freezer door freezer door gets stuck Turbo Air freezer True freezer Beverage Air freezer Masterbuilt freezer. I have taken the carb off and cleaned the bowl out and replaced the "O" ring on the choke button housing. To fix a vapor lock, keep your tanks cap open for a while to allow the gasoline vapors to escape from the fuel lines. When driving it, it runs OK (but not great) for about 5 minutes,then misses and backfires. Now, when I start it in neutral, the engine surges and doesn't reach a very high rpm. off the petcock, then you are vented through the cap. If the only line you see coming from the tank is the fuel line coming. It would then go over to a charcoal canister. Last edited by slowmo 08-19-2015 at 05:51 PM.I'm having the same problem with my DS, and am looking for help here.The problem has gotten worse recently. Look around under the tank and see if you see a piece of small vacuum. I will then remove the mechanical fuel pump (I have evil plans for its demise) and I will fashion a plate to cover the hole it leaves behind. I'm getting stainless braided fuel line which I will run as far away from the engine heat as possible. I'm getting an electric fuel pump and I will mount it low on the frame near the fuel tank optimizing the siphon for the fuel pump intake. I said something like "fiddle-sticks".Īfter about the fifth iteration it started and stayed running and I made it home. I hate to pay Mercruiser 50 for a 5 check valve and some hose clamps, especially to fix their problem (it must be marine grade:smt021) Ill. Then I did the Hokey-Pokey (thinking that's what it's all about). Vapor lock is a problem caused by liquid fuel changing state to gas while still in the fuel delivery system of gasoline-fueled internal combustion engines.This disrupts the operation of the fuel pump, causing loss of feed pressure to the carburetor or fuel injection system, resulting in transient loss of power or complete stalling. Most of these old cars have their original tanks with 50+ years worth of dirt, dust, rust, varnish, bugs, etc. That doesn't mean you can't vapor lock while running, just that it's not common. ![]() This may help the vapor lock by creating a pressure chamber and turning the vapor back into fuel. Vapor lock usually occurs when you stop, heat soak the bowl & pump, & then it doesn't want to start. Space them out on the line to create a chamber between them. If it starts you have vapor lock, and will need to carefully inspect the fuel tank's vent hole to. Clamp two clothes pins on the rubber fuel line that feeds gasoline to the fuel pump. Unscrew the gas cap, vent the gasses and try to restart your saw. Simlpe fix would be to find where the fuel line is too close to heat source and shield it. Check for this problem the next time your saw dies when it's hot. Started it up and it ran for 30 seconds or so and died again. Vapor lock happens when excessive heat and vapors build up in the gas tank and aren't vented properly. Poured some fuel into the fuel line, pumped some more. tagfintechcomm0f-20&camp1789&creative9325&linkCodeas2&creativeASIN1635172993&linkId03. I was blasting up the Mt Rose highway (3rd gear - 35 mph - line of honking cars behind me) when it went chuga-chuga-dead.ĭisconnected the fuel line at the carb, pumped lever on the fuel pump furiously (1st degree burn blister covering my left index finder tip) and no fuel coming out. I thought I had the vapor lock beast conquered but it reared its ugly head last night on the way home.
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