Following parts has been changed/renewed:
Low pressure fuel filter.
Low Pressure fuel pump diaphragm Set.
Spark plugs.
fuel line with primer bulb.
Non return connection at tank. here
See full version: Suzuki df150 low pressure fuel pump
Following parts has been changed/renewed:
Low pressure fuel filter.
Low Pressure fuel pump diaphragm Set.
Spark plugs.
fuel line with primer bulb.
Non return connection at tank. here
Tested with another tank/fuel line/bulb � same symptoms.
Fuel line connectors in engine casing bypassed � line connected directly at low pressure fuel filter � same symptoms.
High pressure fuel filter bypassed � fuel line connected directly at high pressure fuel pump and to the rail � same symptoms. [links]
Hi
I�m having an DF50 from 2003 with 202Rhs and I�m dealing with following problem:
Eng. Is starting end runs idle without problems.
I can go full load for approx 2-3 min. After that it goes to approx 1000Rpm. I keeps running in idle and allows me to go back on full load, now in less than 1 min.
If I pump at the priming bulb during the drop it raises in Rpm immediately. more
I�m suspect the High pressure fuel pump to cause the problem, any good ideas?
If the old lp pumps were bad in the past, did the check valves break apart, or diaphragms just tear? I'm guessing check valves broke apart. So. here
If fuel is the issue (it sounds that way), and you replaced the lp pumps in the past, did you remove the float and needle valve seat in the VST when you replaced them, at that time? And clean the in-line filter at bottom of VST to hp pump? If you did clean the VST, did you remove the needle seat (possible restrictive blockage from old lp pumps), and did you reset the float level per manual? [links]
Id like to think the lp fuel pumps would last longer too. Six to 7 years isn't good. You can take the pumps apart carefully, and not have to rebuild them if you don't damage the diaphragms. Also wouldn't hurt to have a kit for backup if one did tear.
And yes, the problem could still be related to lp pumps? When you remove each pump, also check that small hole where it is mounted for possible blockage. That hole provides the negative, and positive pressure to keep those lp pumps working properly. more
No problem. my email address is jimmypetter@att.net. You can send the file to me at this address. [links]
I want to update all of you on my progress with my 2006 DF150. I took some suggestions from Harper and made a plan to execute. First let me advise that my engine is out of warranty and I would not reccomend these steps unless your engine is out of warranty.
Okay, here goes nothin'. I have a feeling the file will be too big to upload. [links]
16 months ago I had to have some fiberglass repair done to my boat. When I dropped the boat off for repair, the motor ran flawless. It cranked everytime and ran smooth as a top.
When I got it back. I charged the batteries, changed the fuel filter and drained any gas in the tank and replaced it with fresh gas. Disconnected the fuel line at the motor and flushed the fuel hose. Connected everything back up and attempted to start the motor. It cranked normally, but didn't fire. I checked the "White Wire" and fuse (Even replaced the fuse) but it still will not fire. I check the kill switch at the ignition and even bypassed it, still not firing. I even checked the switch in the controls (Gear Shift). still won't fire. I am at wits end. I don't understand why this could be if it just sat. I would think it would run, but maybe run rough. The batteries were stone dead and it took some time to recharge them, but they spin the starter like they were brand new so not sure it could be the batteries.
Jim
there are others on the board that have the 150's.. I have the 175
first thing .. getting spark? pull one of the plugs out.. ground it and turn over the motor and see if you are getting a spark..
inline fuel bulb. (manual pump) getting it to pump fuel until it is hard and won't pump any further?
you didn't mention the low pressure fuel filter.. visually, is it full of fuel?
and when you turn the ingnition switch on.. you should hear the high pressure pump running..
I want to thank everyone who helped me thru this.
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