Walbro Fuel Pump
- Thread starter canucksafari
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as close to the fuel tank as possible.
Rosco, how much more air can you fit into a cylinder?
and yet people like to turbo and engine.
of course if you have not tried it then you wouldn't understand, but for the $75 it costs, i like it.
Rosco, how much more air can you fit into a cylinder?
and yet people like to turbo and engine.
of course if you have not tried it then you wouldn't understand, but for the $75 it costs, i like it.
Two other benefits to fitting an inline fuel pump:
1. No more priming after filter changes or injection pump work. Just turn on the key, wait until the fuel pump stops ticking, then you're good to go.
2. No fuel starvation when on steep inclines - nose in the air. Never happened to me, but I KNOW someone out there has had this problem.
For me, I had fuel problems when it was bitter cold. Adding a fuel pump helped this greatly. You don't need high pressure or flow rates. I opted for a Walbro FRD-1 which is 4.5-7psi. I mounted in in the engine bay right before the fuel filter. I don't notice any performance gains, but it certainly helped with my cold start problems. $85 well spent in my opinion.
1. No more priming after filter changes or injection pump work. Just turn on the key, wait until the fuel pump stops ticking, then you're good to go.
2. No fuel starvation when on steep inclines - nose in the air. Never happened to me, but I KNOW someone out there has had this problem.
For me, I had fuel problems when it was bitter cold. Adding a fuel pump helped this greatly. You don't need high pressure or flow rates. I opted for a Walbro FRD-1 which is 4.5-7psi. I mounted in in the engine bay right before the fuel filter. I don't notice any performance gains, but it certainly helped with my cold start problems. $85 well spent in my opinion.
I searched for a Canadian retailer about a year ago. Turns out the best price was from a US retailer Advanced Performance Engineering (Auto Performance Engineering - Walbro fuel pumps and more). $85 plus $22 shipping.
Most forum suggestions said to mount it near the tank. I don't see any downsides to mounting it under the hood. Plus it was much easier to install, easier to wire and will stay cleaner.
I can hear the pump tick away for a few seconds when I first turn on the key in the morning. Then it will tick with a regular frequency (~1 tick per second) if I leave the key on. I suppose this is the fuel being circulated back to the tank. Once the engine is running, I don't hear the pump at all.
Mounted mine on a bracket mounted to the exhaust hanger with rubber mounts.
I can't say whether the the location makes any difference but for my application it makes sense (converted 97 FZJ) because I already have the original fuel pump power available at the tank plug, just had to jump it over to the Walbro.
I can't say whether the the location makes any difference but for my application it makes sense (converted 97 FZJ) because I already have the original fuel pump power available at the tank plug, just had to jump it over to the Walbro.
If the fuel pump is full ,you cannot fit any more in. If its not filling ,it needs the fuel regulator adjusted or the feed pump is kaput and so is the rest of the pump most likely.
Some say there is proof the extra feed pump makes them run faster by pumping the primer pump while it is running. Makes no difference to either of mine.
I like to move on things when there is documented proof. Have not seen any to date,just things like "it feels smoother" or it runs better"
The same kind of testimonials you see on fuel saver gadgets adverts
Others claim extra feed pumps relieve the load on the internal feed pump. I really cant see how. It turns on the same shaft that drives the fuel pump and will suffer any inherant friction regardless.
Mentioning the turbo is a red herring and nothing to do with what we are discussing and besides the turbo is a proven mod that gets more from an engine.
You can compress air but fuel is a liquid and therefore cannot be compressed,not much anyway and certainly not with 7psi.
At best,the pusher pump is making up for a delapidated injector pump,at worst its fools gold.
Took me about 2 minutes and 4-5 pumps to prime mine last week.Cheaper than $85.
I block off the pump inlet pipe if the fuel line is being discoonected at the pump and elevate the fuel lines to keep them full
As I said in reply to crushers post. This is making up for a delapidated pump,not an improvement to Denso's design.
Any diesel should run upside down till the oil stops lubricating
Are you the one that had a lot of problems with the injection pump or getting the engine to run right?
Might have been the other guy with "scuba" in his log on handle
I confess I have little cold start experience,but others with well tuned diesel engines dont seem to have fuel starvation problems in the cold.(except when it gels)
I couldnt agree more on having a pusher pump or lifter. On the early cummins 6B-Ts with Bosch VE pumps it is essential to help them make it over the 300,000 mark. Instead of an electric they had the dreaded diaphram lift pump that ran of the cam eccentric.
Note it is better to have a high volume low pressure unit or else you will have fuel leaking or sweating on the inlet side of the VE.
Note it is better to have a high volume low pressure unit or else you will have fuel leaking or sweating on the inlet side of the VE.
Not all pumps have this problem.
The DENSO rotary injector pumps draws 3-4 times as much as the engine needs,with the excess being sent back to the tank.
I do agree with you one one point,worn out injector pumps are the only ones that will benefit from another lift pump
