OM606.962 hard starting
OM606.962 hard starting
12-18-2021, 03:53 PM
#15
(12-18-2021, 11:12 AM)50harleyrider Baldur can you provide a sketch of that? I'm a bit confused about teeing the regulator into the supply line AND return line. Did you mean the supply to the regulator and return to the filter? My OE lift pump is functioning fine so I didn't destroy it running unregulated constant on. Should I electronically regulate it so it will operate with a duty cycle less than 100%? i'm also afraid I may have destroyed the banjo check valve running this way. Anyone know the part number for it on the 606.962?
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thanks barrette. Do all your comments take into account the original 1997 f150 lift pump? It is controlled by a driver mounted on the frame rail and the gas engine had a regulator on the fuel rail on the engine. I have eliminated the regulator when going diesel as well as the driver. my research indicates a 5-70% duty cycle is what the pump should run. None of the other posts have agreed 5 bar pressure would not cause problem so I am still confused.
The way I regulated the system on my mechanical pump was a regular banjo on pump return with a quality aftermarket bypass regulator right after the pump but entering the return before the injector return merges with the main return line. I hold 1.5 bar constant running a small Bosch fuel pump, no pressure issues. If you put the regulator after the injector returns you will have a bad time, I learned that quickly on my first attempt. The bypass type regulators are for continuous duty pumps and hold the set pressure while continuously dumping excess flow back in the tank. If you have a pump rated for continuous duty and not oversized for the application you don't have to reduce the duty cycle, if that is possible for the pump motor design.
I've been researching switching to a brushless pump, like a fuellab prodigy. If you look at their literature they have some diagrams showing the different regulator applications, here is one of their regulators with manual in "instructions" on that page, which shows the concept: https://www.jegs.com/i/Fuelab/083/51506-1-S-T/10002/-1. The bosch gas pumps I used (original to some mercedes gas cars) have brushes which do not live as long in diesel, and I have had trouble with air and fuel leakage due to apparent rubber incompatibility which is why I'm switching to something speced for diesel.
(12-18-2021, 11:12 AM)50harleyrider Baldur can you provide a sketch of that? I'm a bit confused about teeing the regulator into the supply line AND return line. Did you mean the supply to the regulator and return to the filter? My OE lift pump is functioning fine so I didn't destroy it running unregulated constant on. Should I electronically regulate it so it will operate with a duty cycle less than 100%? i'm also afraid I may have destroyed the banjo check valve running this way. Anyone know the part number for it on the 606.962?
------
thanks barrette. Do all your comments take into account the original 1997 f150 lift pump? It is controlled by a driver mounted on the frame rail and the gas engine had a regulator on the fuel rail on the engine. I have eliminated the regulator when going diesel as well as the driver. my research indicates a 5-70% duty cycle is what the pump should run. None of the other posts have agreed 5 bar pressure would not cause problem so I am still confused.
The way I regulated the system on my mechanical pump was a regular banjo on pump return with a quality aftermarket bypass regulator right after the pump but entering the return before the injector return merges with the main return line. I hold 1.5 bar constant running a small Bosch fuel pump, no pressure issues. If you put the regulator after the injector returns you will have a bad time, I learned that quickly on my first attempt. The bypass type regulators are for continuous duty pumps and hold the set pressure while continuously dumping excess flow back in the tank. If you have a pump rated for continuous duty and not oversized for the application you don't have to reduce the duty cycle, if that is possible for the pump motor design.
I've been researching switching to a brushless pump, like a fuellab prodigy. If you look at their literature they have some diagrams showing the different regulator applications, here is one of their regulators with manual in "instructions" on that page, which shows the concept: https://www.jegs.com/i/Fuelab/083/51506-1-S-T/10002/-1. The bosch gas pumps I used (original to some mercedes gas cars) have brushes which do not live as long in diesel, and I have had trouble with air and fuel leakage due to apparent rubber incompatibility which is why I'm switching to something speced for diesel.
Messages In This Thread
OM606.962 hard starting - by 50harleyrider - 12-09-2021, 04:32 PM
RE: OM606.962 hard starting - by barrote - 12-09-2021, 06:26 PM
RE: OM606.962 hard starting - by 50harleyrider - 12-10-2021, 10:22 AM
RE: OM606.962 hard starting - by barrote - 12-11-2021, 05:03 AM
RE: OM606.962 hard starting - by baldur - 12-12-2021, 08:10 PM
RE: OM606.962 hard starting - by 50harleyrider - 12-14-2021, 07:38 AM
RE: OM606.962 hard starting - by 50harleyrider - 12-14-2021, 08:06 AM
RE: OM606.962 hard starting - by baldur - 12-14-2021, 10:58 AM
RE: OM606.962 hard starting - by 50harleyrider - 12-16-2021, 05:53 PM
RE: OM606.962 hard starting - by baldur - 12-17-2021, 10:27 AM
RE: OM606.962 hard starting - by TE27Levin - 12-14-2021, 02:44 PM
RE: OM606.962 hard starting - by 50harleyrider - 12-17-2021, 12:01 PM
RE: OM606.962 hard starting - by baldur - 12-18-2021, 08:10 PM
RE: OM606.962 hard starting - by barrote - 12-18-2021, 04:35 AM
RE: OM606.962 hard starting - by 50harleyrider - 12-18-2021, 11:12 AM
RE: OM606.962 hard starting - by WSchotty - 12-18-2021, 03:53 PM
RE: OM606.962 hard starting - by 50harleyrider - 12-19-2021, 05:29 PM
RE: OM606.962 hard starting - by barrote - 12-20-2021, 03:02 AM
RE: OM606.962 hard starting - by 50harleyrider - 12-20-2021, 08:07 AM
RE: OM606.962 hard starting - by X Double Dot - 12-20-2021, 09:32 AM
RE: OM606.962 hard starting - by 50harleyrider - 12-20-2021, 10:27 PM
RE: OM606.962 hard starting - by 50harleyrider - 12-22-2021, 04:41 PM
RE: OM606.962 hard starting - by TE27Levin - 12-23-2021, 04:33 PM
RE: OM606.962 hard starting - by 50harleyrider - 01-20-2022, 09:18 AM
RE: OM606.962 hard starting - by 50harleyrider - 01-24-2022, 01:44 PM
RE: OM606.962 hard starting - by barrote - 01-25-2022, 04:06 AM
RE: OM606.962 hard starting - by 50harleyrider - 01-26-2022, 11:15 AM
RE: OM606.962 hard starting - by baldur - 01-26-2022, 12:50 PM
RE: OM606.962 hard starting - by barrote - 01-27-2022, 05:06 AM
RE: OM606.962 hard starting - by baldur - 01-27-2022, 06:10 AM
RE: OM606.962 hard starting - by 50harleyrider - 01-29-2022, 12:43 PM
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