[mybassfishing]

There are some other significant differences between HPDI and the other outboard DI systems. High fuel pressure is the most obvious. Yamaha's high-speed fuel pump cranks fuel pressures up to 700 psi before fuel is injected into the cylinders. The competition uses fuel pressures that vary from 90 to 250 psi. Higher pressures mean greater atomization, which results in better burning and more power from the injected fuel charge. The HPDI injectors, unlike those used in competing systems, don't protrude into the combustion chamber. So there's no disruption in fuel flow, and there's less possibility of carbon buildup a maintenance headache and durability concern as well. here

[T_X]

DI two-strokes have a potential for combustion fine-tuning that's similar to today's computer-controlled fuel-injected auto engines'. HPDI takes advantage of this potential with a sophisticated engine management system to elevate the two-stroke to new levels of efficiency. These outboards, like their automotive counterparts, use multiple sensors to transmit data such as crank position, throttle position, timing, rpm, water temperature, air temperature, atmospheric pressure and the amount of oxygen in the exhaust to the computer. Yamaha uses an industry exclusive O2 sensor to continually monitor the oxygen content of the exhaust gases. The computer analyzes all this data and automatically adjusts the ignition timing and fuel mixture to each individual cylinder for maximum power and fuel efficiency, and fewer emissions during the next combustion cycle.

[atomesix87]

Yamaha has developed a high-pressure direct injection system (HPDI) that's used on seven all-new 2.6-liter 76 degrees V6 engines in 150- and 200-hp ratings. These engines meet year 2006 emission requirements, and deliver fuel economy in the engine's most commonly used rpm range-2500 to 5500. Yamaha claims extensive testing has proved its engines have the reliability that has eluded its competitors. here

[Max Stirner]

With DI, the exhaust port is completely covered by the piston before the fuel is squirted directly into the combustion chamber, so no fuel is wasted. But DI can pose some lubrication challenges. Oil is still drawn in from the bottom of the cylinder but fuel is injected from the top. Since the fuel and oil don't mix, the oil isn't thinned sufficiently to move up and lubricate the top piston ring. That's a recipe for engine disaster-as one manufacturer has discovered.

[charlestaylor142]

Direct injection- savior of the two-stroke outboard. That's what some manufacturers trumpeted a year or two ago. But instead of joyfully harvesting the promised benefits of smoother running engines, improved fuel economy, nonsmoking exhaust and reduced emissions, many boaters were stunned by a grim reaping of engines that fouled early on and even self-destructed. Sure, you get great fuel economy, no smoke and zero emissions when the engine breaks and doesn't run. But that's not what the motor makers had in mind. And while one major outboard manufacturer is now struggling to stem the plague that's crippling its engines (and its reputation), along comes Yamaha with impressive new two-stroke technology for its 2000 model year engines. Technology that could well leapfrog the company over the competition to the No. 1 spot in sales. Right now, if you count Evinrude and Johnson as separate brands, Yamaha is No. 2 behind Mercury. [links]

[aurelian]

With today's desire for instant gratification, Yamaha needed to engineer instant starting into its outboards. So while conventional direct injection systems may require longer cranking times because the fuel is not yet pressurized when the engine is started, HPDI uses a pressure sensor inside the fuel pump. This sensor informs the computer of the fuel pressure in the system, and the computer increases the duration that each fuel injector is open, enriching the fuel mixture for immediate starting. There's also a pressure regulator inside the pump to maintain a constant pressure of 700 psi. Conventional DI systems, by comparison, can suffer from fuel pressure fluctuations-which is not the hot setup for consistent smooth running.

[Lemming]

Seller: tcs*marine ✉️ (8,334) 100% , Location: Canton, New York , Ships to: Worldwide, Item: 124877133687 Yamaha 200 HP 2 Stroke Fuel Pump Assembly PN 6E5-24410-03-00 Fits 1984-2006. Yamaha 225 HP 2 Stroke Fuel Pump Assembly PN 6E5-24410-03-00 Fits Yamaha 115-300 HP 1984-2006 May Fit Others As Well Please Contact Us If You Are Unsure Of Fitment WARRANTY: 90 Day Money Back Guarantee SKU EB7B42419 Condition: Used , Condition: Good Usable Condition (90 Day Money Back Guarantee) Part Has Only Been Used In Freshwater , Return shipping will be paid by: Seller , Returns Accepted: Returns Accepted , Item must be returned within: 60 Days , Refund will be given as: Money back or replacement (buyer's choice) , Manufacturer Part Number: 6E5-24410-03-00 , Brand: Yamaha , Warranty: 90 Day See More here

[Jeniferleona]

5 views, 2.5 views per day, 2 days on eBay. Good amount of views. 0 sold, 1 available.

[DJFC]

here

[tissemand]

[trangcotich]

[links]

[BillRoundsEsq]

NOTE: Additional parts are available, though not all are listed on this website. If you need additional parts for a rebuild, please email or fill out the form below and we can build a larger order for you. here

[didiertomas2385]

This listing is for a New Aftermarket Yamaha 40-90 HP 2-Stroke Fuel Pump. This item replaces OEM# 692-24410-00.

[tuhinworld3]

This item qualifies for Free Shipping in the Lower 48. Increased fees will apply for Alaska, Hawaii, US Territories, and International Shipping. Shipments to Kentucky will be charged 6% KY sales tax. here

[v-tim]

[NickB]

[links]

[nigz]

You must return items in their original packaging and in the same condition as when you received them. If you don't follow our item condition policy for returns , you may not receive a full refund.

[DanielLeerasiri]

Refunds by law: In Australia, consumers have a legal right to obtain a refund from a business if the goods purchased are faulty, not fit for purpose or don't match the seller's description. More information at returns .

[kavindave26]