Member. Don’t worry, there are pretty straight forward things you can do to check where your problem is. So I posted my question about the main jet thread size earlier. Hope that helps,,,,, Busmech. Starts up and idles good, once you start giving it throttle it acts as if its starving for fuel. This usually goes away once the engine warms-up. Poping through carb? Any help will be greatly appreciated. The steps involved are a bit different depending on whether your ATV has EFI (electronic fuel injection) or a traditional carburetor system. If I place my hand over air filter side and leave about 1/8 inch between hand and carb then crank it it will start but … It seemed like it did this all at once without any warning. When trying to start gas spits from air filter side side of carb. Both carburated and fuel injected … Help!!!!! Technical Backfire/Spitting through carb - troubleshoot? Gummed-up Carburetor—If you let fuel sit in your fuel tank for months without using it and your ATV has a carburetor then the fuel in the tank will start to degrade. Thought I had it, but alas seems to change its mind if I look at it funny. 21 Posts . Typically the problem of having your ATV leaking gas into the intake manifold is reserved to carbureted engines. View Full Version : Backfiring through the carb after rebuild. Am I right in saying that this could mean its running too lean or too … Page 1 of 2 - Spitting Back Through The Carb - posted in Problems, Questions and Technical: Morning! A quad will spit and sputer when it is running rich. eprovenzano. Latest Posts. Submitted: 11 years ago. Senior Member; Posts: 1194; What causes a motor to spit through the carb? The timing was set to 8 degrees before TDC with the vacuum hose to the advance disconnected and blocked. Started better, once. This thing gets tons of beach sand thrown at it 24/7. Hey all, I work for a fleet shop and we have a lifeguard ATV its a Kawasaki brute force 650. Joined Jul 21, 2013 Threads 10 Messages 895. I can let go of the throttle and it'll settle back to idling. The dwell was set to 30 while the vacuum advance was disconnected. By RedneckBobby, April 21, 2017 in Suzuki ATV Forum. When this occurs, it means the floats are stuck or you have a clogged jet. Jul 13, 2015 #1 I have a cub cadet with a Kohler engine it is back firing through carb any and all help will be appreciated thanks jeff . Richard G. : Did you soak this carb in cleaner ? I got everything put back … Ask Your Own Motorcycle Question. It idled rougher than ever and was … The solution to this problem is to clean the carburetor, fuel lines and supporting fuel system parts. A problem which plaged the 3 cylinder Evinrudes. My buddy has a big bear 400 that is … His work has appeared in "USD Vista," "UNLV Rebel Yell" and the "East … Carb spitting. The vehicle is a 70 El Camino SS 396 with a Q-jet carb. Share this conversation. Why does my carburetor spitting out gas? Joined: Jun 1, 2005 Location: "Rochester" NY. watts16 04-23-2006, 04:34 PM Tags. Note: Some gaskets and plastic components will swell if exposed to carb cleaner so remove these prior to use. JACUSTOMER-llkxpg7a- : i haved cleaned carb 3 times maybe there is something wrong with … Its back firing through one carb more than the other one and back firing through the exhaust. If needed, go back with the brush. ATV Pull Behind Mower – Specs, Types … Checking for Spark/No Spark Troubleshooting ATV SAFE START GUIDE (ALWAYS USE PROTECTIVE GEAR WHEN RIDING OR WORKING ON YOUR ATV) 1) Follow instructions on how to hook up battery, and assemble the rest … Author Topic: What causes a motor to spit through the carb? References. In a 2 stroke 70H.P Veinrude, the spitting of fuel back through the carb can be caused by excessive fuel - a carb problem- and/or a reed valve problem. … These mainly occur through a process called back-firing, where the carburetor is feeding too lean or too rich an air-fuel mixture to the combustion cylinders or where the carburetor "timing is too advanced." Jump to Latest Follow 1 - 18 of 18 Posts. It wasn't before, now it is. Backfiring on your ATV due to a faulty or clogged carburetor can be something that begins to occur more and more frequently. If you hear a sudden change in engine idle, thats where the leak is. Troubleshooting a clean ATV carburetor is also much easier than troubleshooting a dirty carb. Facebook; Twitter; Youtube; Instagram; Pinterest; Newsletter; Sign in to follow this . Messages: 1,523 Likes Received: 1. 1 Posts . New Small Wheel Youth - Tao Tao 125D - Utility ATV - CA Carb Approved $1,078.00 $1,034.00; Troubleshooting and PDI Troubleshooting Carb, Battery, and Fuse. Mid and top rpms are greaat. It’s not that hard to check the parts to see if their … Assuming all of your plugs and wires are in the correct locations and you haven't messed with the timing at all, then the most common cause of backfiring through the carb (spitting or coughing) is in the morning when a carb's air/fuel mixture is a bit too lean. (Read 19243 times) team39763. In essence, once the degraded oil begins to compile, it is not as likely that you will burn through it without experiencing the jolt of an ATV backfire in the process. Show More . of course it's an off sized tap Well needless to say I have bigger … Footage taken from Holley Carburetor Installation & Tuning DVD Checked points. Cam design: Long duration cams with early opening intake valves can contribute to backfiring. S ... One of the most common problems that customers complain about is the spit-cough-pop from the carburetor as a Harley goes from idle to ¼ throttle. Nitroexpress Veteran Member. The rebuild consisted of a new wiesco piston and rings(std bore), redoing the valves with new … This results in a fuel mixture that is too lean for the engine and results in backfires through the carburetor. Messages: 1,831 Likes Received: 0. Page 1 of 2 1 2 Next > Joined: Dec 6, 2018 Posts: 62. etc. jest2dogs. 9 Posts . Readjusted. Answered in … By afraid2fly, July 13, 2010 in Utility ATV. There are a few different reasons you may not be getting fuel to your engine. just put a new top end on my foreman. The piston hit the top and bent the intake … I completed a rebuild of our 99 400EX because it smoked like a 2 stroke.