Still bogs under load & has a LEAN miss backfire out the carb under load. I've revved the engine like this in the past (with the moped stationary), but for shorter durations. 5 hp Tecumseh is bogging down under load (5-6" snow). Does the engine smoke when it bogs down? I have a Generac pressure washer model 1674-0 that has the MTPV82940 pump. I get it to idle super smooth and I have adjusted the high speed jet to get great performance at idle and with light snow. Updated: October 30, 2019. hi I have a ruckus that rides fine up to 20mph then just wont accelerate at all and seems to lose power until i let the gas off and then it'll accelerate fine up to 20 again...can anyone help..thx, February 21 by I then tried to emulate the tilted engine not under a load. If I'm in park and mash the pedal the engine will hesitate a little but will rev up. 2) the main jet is clogged (it could also be the main jet is too small but sounds like it was previously fine, so that’s unlikely) you’ll need to take the carb apart and give it a good cleaning. good to know ill try a fresh tank from a different station than the last tank. It sounds like you need to adjust the carb. On vacuum-secondary Holleys, it may be necessary to fine-tune the secondary opening rate using a softer spring (you can buy a spring assortment kit under Holley PN 20-13). i was running fine then filled my tank and it started its crap. Anything below 3.5 psi on the top end is unacceptable-it indicates the pump or fuel-supply system is not keeping up with the engine's fuel requirements or the fuel filter is clogged or restrictive. Then it's hard to start what could it, It's got a brand-new air box an the shop put the carb on an adjusted the carb. There was a problem with the moped. I just emptied and cleaned the gas tank, bowl, float and … As soon as I try to give it a little more juice or jab the throttle, the falls on its face, sometimes revving back up … Engine starts easy and runs well but has problems with washer bogging down and stalling after several minutes of use. (I was mistaken that it was running rich before). New issue that's just come up in my truck. Still bogs under load & has a LEAN miss backfire out the carb under load. This is simply just a hesitation or a big and usually noticed when accelerating under load. Answer: Bog is a vague term that may mean different things to different people. If the bike does not idle smoothly or takes a long time to settle back down to idle speed, and you've already cleaned the carburetor, you may have an airleak. Just ideas. Main things (which I imagine you already checked) Clogged air or fuel … You might also check the spark plug. Re: engine bogs under load I think you've elliminated any exhaust flapper malfunction by getting rpm in neutral. The engine starts great, never misfires, etc. In taller grass (even short grass sometimes) it bogs down. This is a Murray 22", probably about 10-15 years old but gently used. The truck runs great except for when It hits higher RPMs when its under load … If the car now picks back up and pulls, it's a sign the carb's main system is too lean. The intake is a Performer 2-O. Accessibility. Although unlikely, there may be an ignition problem, too much timing (shoot for 34-36 degrees total on pump gas), or weak valvesprings. My neighbor suggested that all older motorcycles have same issue. Permalink Printer Friendly. Low vacuum here means the sock, strainer, or screen inside the fuel tank is clogged or has collapsed. Airleaks can be caused by a bad seal in the engine, or in the intake/carburetor joints. A couple of days later I fired it up, but it ran horribly. Antony Adams. The engine runs fine when not under load, but bogs down and stalls when under load. It absolutely refused to go past 20 MPH even though I'd usually go 27-28 on the same stretch of road. assuming a pretty much OEM stock engine and the tune up is not … Lean bogs come about when the amount of fuel in your engine … My S10 blazer lacks power, bogs under acceleration, recently truck would not start, took it to a garage and they replaced the injections module (“spider injection module, complete unit", fuel pressure regulator included), truck still lacks power and bogs under acceleration. Looks like new. I find none of the answers acceptable except the condensor because the problem occurs when the engine gets hot. Georgette Preston, I had this problem this morning, but i seem to have a leak coming from my air cleaner/muffler, i have a tgb r125x, 11/16/2016 by So, if you get it started with the valves open, can you close it slowly – and does the engine rev at all? Miroslav Djuric Assuming that the ignition system is in tip-top shape, that sounds like a fuel related issue. The proper method to check an ignition coil is using an oscilloscope, but an ohm meter works well, too. If load is the problem it may be an engine power problem-just enough to drive on flats, not enough to engage clutch or pull hill. Why is my engine bogging? I went through all the fuel system checks no faults found then I read about the coils. The water is heavier the gas and sits at the bottom of your tank and float bowl. Try holding the choke while running at a good speed (15-20 mph). A fuel problem would be constant as well as dirty carb, clogged hoses, leaking intake, so the problem is related to the heat which is prolly the points/condensor, Check for fuel lines too close to a heat source causing vapor lock, 11/09/2015 by