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Hello folks, back with a good old surging issue. It's a Briggs 675EX Quantum engine with surging issues. At first it was horrible when it arrived. Replaced the air filter, removed and cleaned the carb, replaced bowl seal and assembled it all. Ran much much better afterwards but not perfect at...

Hello folks, I can not get my BVS153/Vantage engine to run smoothly. It not that it revs up and down and such governor issues, it's more like constant smaller misfires and non consistent running. No matter low or high throttle, it always has that issue. It doesn't bog down when under load, or...

Hello folks, so I have gotten a Yamaha EF600. At first, it didn't run at all as fuel leaked from the fuel pump/cock located under the gas tank that pushes gas up to the carb, and cycles back to the tank. I cleaned the pump, as it was totally blocked, afterwards no leaks were to be seen and it...

Hello folks, so one of those engines with the plastic carbs without a primer bulb, with the white "cartridge" in it, a 625EXI engine has issues with the RPM/throttle surging up and down. Before this happend, the engine refused to run properly at all, so I took the carb apart, cleaned it, the...

Hello folks, my used MTD (13dh452e676) had his cables fiddled around with (very badly that is). Also the charging wires have been disconnected. So I went trying to fix it. Found out that the engine has a two output wire from the alternator, one with a diode and one with pure AC for lights...

Hello everyone, so a FS38 trimmer (looks fairly new) has some issues. First off, the primer bulb sucks air in every time you let off the bulb, lots of air bubbles to be seen. Also, the bulb doesn't fill more than like 50% or less no matter how often you press it. Secondly, the trimmer runs...

Hello folks, I want to know if my engine has a rod knock, since I'll be a doing replacing all the gaskets as soon as winter hits since oil has started leaking all around the block. So, if I'm already opening, I'd like to replacing the rod (if it's the part that's bad) too. Also going to replace...

So, lately my Tecumseh Vantage 35 (not sure if it's this one - I swapped the engine a few years ago, used to be a BVS143, and the new one was a direct fit, it is 100% the same as my old one, just a bit newer) started losing power after 10-20 minutes of mowing. It simply doesn't take gas, it...

Hello folks, so I got a mower engine to repair, the one stated in the title. It won't start, air filter is clean, carb works (sparkplug is wet)... I replaced the sparkplug with one from a mower that I confirm that works, and the engine still has no spark, yes I did test the sparkplug. I...

Hello folks, I mowed with my MTD tractor the other day, and I realized that it became kind of... lazy in the last time. So I thought that I should replace the spark plug, never actually looked at it ever since I own it. And I realized that the spark plug isn't the one that should be in it. It's...

Hello everyone, I have 2 BVS 153 engines (I guess they're both 153) and both burn oil. Most of time they just burned oil and that's it, and the spark plug is just left very dirty and burned, but cleanable. But in the last few times of mowing the spark plug is always wet, full of oil (and also...

Hello everyone, I sarted using a (probally) older lawn mower, which has an OHV engine, not sure who made it, because there are no stickers on it. Anyways, by looking at my Gutbrod lawnmower, it says, to clean it, it has to be placed on it's right side, where you spill the oil in. I tried it on...

Hello everyone. We bought a MTD spider 92rd 42" 11.5hp lawnmower tractor. We bought it for about $200. It is in solid state, but the main problem is the mowing deck (blade deck). 1. the belt was not original, it was too large so it couldn't mow 2. we bought an aftermarket belt which works...

Hello everyone here, I'm new here I own 2 Tecumseh BVS153 engines (Gutbrod lawnmowers), one which is totally normal, one with ignition key and "pulling help". They are probally very very very old, and, still they're running great. The are no problems, unless the problem with blue smoke. Both of...