#FUELPUMPS / WHAT FAILS? / GAS IN OIL? / THEN YOU NEED TO GO CHECK THIS RIGHT NOW!

Today we take an in-depth look on pulse style fuel pumps, Whether it be the Briggs & Stratton or Kawasaki style fuel pump or the rebuildable Mikuni style fuel pump shown in my video, let’s go over the operation And failure points of most diaphragm style fuel pumps

[mg-bxbi]

what a fantastic, simple, straight-forward explanation. Thank you.

[butler]

Excellent video. This is the first time I have seen one of these taken apart and explained. Great job. Thanks for the info and video.

[obxarms]

Awesome man! It takes one guy who is willing to be a good man and help out with a video like this!! Thanks!!!

[DCS]

I have had fuel get into the crankcase, that has always been a big mystery as to how in the hell that happened! Thanks for clearing that up.

[Rein_Ciarfella]

Hey, Jeremy! Thanks for this one! I had a Tecumseh pump that didn’t seem to be working on a Tecumseh v-twin engine. It took long crank times to get the engine to fire. I took the pump apart and found fine debris inside but close inspection showed no damage to diaphragms or check valves. Cleaned it up good including ultrasonic, sprayed with a bit of fuel on all surfaces, reassembled and started to mount back on the engine but found the last 1/4 inch of fuel line to the carbs was cracked so I cut that off and completed connecting. Full choke, full throttle, key on and she fired after one crank revolution! Stopped and restarted multiple times cold and then hot with no further issues so I have to believe it was a small leak in the hose causing the problem.

[mitchkronowit]

Thanks! I watched 3-4 other videos previously and none answered my questions until this one. 👍

[ericcoffedgp]

Yep, those fuel pumps can be little buggers. They are hit or miss as some last less than a year and some can last over forty years like the one on my 1969 Wheel Horse. Thanks for the info! 👍

[stevenwilliams]

Thank you! This is an excellent video. I wish more of those who give DIY instructables break down the mechanical operation and theory of operation as defined as you. There is much more clarity and understanding to what this mechanism is supposed to do but also instructs as to why something (the broke part or replaced part) maybe doing other things.

[Melvin-jxdn]

Best explanation of how it works I've ever het, , period !!!! Thank you

[lewerim]

Fantastic. This video helped me understand the just how urgent the small leak at my fuel pump vent really is.

[bilgemonster]

I really appreciate you taking the time to make this video

[COFFEE-ep]

RIGHT TO THE POINT, NO BS BLAH BLAH HEAD TALKING !!

[MGMerriman]

Very informative. Very easy to watch, understand, and feel the value of information provided. Great job.

[josephrheaume]

Thanks for the video, I did not realize that they built rebuildables fuel pumps.

[stevenlapham]

Great Job! This guy explains every detail well.... even the Name consequences.... shares his knowledge well! Thank You

[christophermcnary]

Great video bro.. Simple and to the point w/ good explanation of fail points

[ericriedesel]

Awesome video. I kept flooding my crankcase on my arctic cat. Pulled the pumps apart and even though the diaphragm looks good, evidently it's not.

[billotww]

Great video thank you. Can you tell me if it matters whether the tank is above or below the pump - so either the pump is sucking the fuel out of the tank or the fuel flows by gravity (as well as suction) to the pump. Based on how it works, it doesn’t look like it would matter, but you would know better than me. Thanks

[thenexthobby]

I'd previously replaced everything from pickup tube to new gas line and filter, but the mower always took a long time to crank when it's been sitting for several weeks. Yeah these are self priming but only when the engine is cranking. Solved that with a Facet electric fuel pump.

[ericjonesgooglepixelpro]

You are super smart man thank you so much for your video