Bad hpfp. Upgrade?

aclearersky · 12-05-2017, 09:38 AM

So my car is taking forever to crank the colder it gets. I stopped putting e85 in it you see if it would help but it still takes 5 or more to start in the morning. Everywhere I'm reading says that that's a sign the hpfp is going and my car just rolled over 95k so it's a good possibility. The question is there an aftermarket upgrade I can do in order to run 100 e85 or should I just go oem?

weehe126 · 12-05-2017, 10:21 AM

No

Kevin39 · 12-05-2017, 11:06 AM

OEM pump with the single barrel VTT shotgun kit should do it. It's still a stock pump though.

OTN55 · 12-06-2017, 05:06 AM

Quote:

Originally Posted by Kevin39

OEM pump with the single barrel VTT shotgun kit should do it. It's still a stock pump though.

can you explain what the vtt single barrell shotgub thing is and what it does ive not seen much on em

Kevin39 · 12-06-2017, 05:59 AM

It moves your HPFP to be belt driven off the front of the motor. It's still an oem pump, it's just spun faster to get the extra volume. http://performance.vargasturbo.com/e...&product_id=43

OneMoreAlex · 12-07-2017, 08:55 AM

Just a few things to take into consideration, not saying the hpfp may be going bad but I would rule these things out first.

Battery: Was it ever changed? is it making correct voltage? both non-operating and running?
spark plugs: When was the last time they were changed? are any of them fouled up?
coil packs: When were they changed last? If never, now might be a good time to change them given the mileage.

moopdoop · 12-07-2017, 10:08 AM

For what it's worth, I had really long cranks last winter and assumed it was my HPFP because I was also seeing some related fuel codes getting thrown. Replaced the battery and codes disappeared and cranks went back to normal. Still a bit slower in sub-freezing temps, but nothing like they used to be.

Whitman158 · 12-07-2017, 10:29 PM

Recently had the same issue. Reluctantly bought a new Battery as the local shop (not BMW) couldn't get a good reading. Hooked up a battery tender, replaced the battery, same problem. Took it in for BMW service and guess what ...HPFP failing. only Difference my car is at 51K miles. May not hurt to drop in to a shop to get the HPFP evaluated.

Whitman158 · 12-07-2017, 10:30 PM

Quote:

Originally Posted by Whitman158

Recently had the same issue. Reluctantly bought a new Battery as the local shop (not BMW) couldn't get a good reading. Hooked up a battery tender, replaced the battery, same problem. Took it in for BMW service and guess what ...HPFP failing. only Difference my car is at 51K miles. May not hurt to drop in to a shop to get the HPFP evaluated.

But I do have a new battery and some piece of mind around that

12-05-2017, 09:38 AM	#1
aclearersky Private 3 Rep 72 Posts Drives: 2011 335i Join Date: Jul 2017 Location: Michigan iTrader: (2)	Bad hpfp. Upgrade? So my car is taking forever to crank the colder it gets. I stopped putting e85 in it you see if it would help but it still takes 5 or more to start in the morning. Everywhere I'm reading says that that's a sign the hpfp is going and my car just rolled over 95k so it's a good possibility. The question is there an aftermarket upgrade I can do in order to run 100 e85 or should I just go oem?
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12-05-2017, 10:21 AM	#2
weehe126 Brigadier General 1161 Rep 3,190 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	No
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12-05-2017, 11:06 AM	#3
Kevin39 Lieutenant 164 Rep 411 Posts Drives: 2011 E90 N55 Join Date: Feb 2016 Location: Indiana iTrader: (0)	OEM pump with the single barrel VTT shotgun kit should do it. It's still a stock pump though.
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12-06-2017, 05:59 AM	#5
Kevin39 Lieutenant 164 Rep 411 Posts Drives: 2011 E90 N55 Join Date: Feb 2016 Location: Indiana iTrader: (0)	It moves your HPFP to be belt driven off the front of the motor. It's still an oem pump, it's just spun faster to get the extra volume. http://performance.vargasturbo.com/e...&product_id=43
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12-07-2017, 08:55 AM	#6
OneMoreAlex Second Lieutenant 45 Rep 194 Posts Drives: 2012 e92 335i Join Date: Aug 2015 Location: Long Island, NY iTrader: (0)	Just a few things to take into consideration, not saying the hpfp may be going bad but I would rule these things out first. Battery: Was it ever changed? is it making correct voltage? both non-operating and running? spark plugs: When was the last time they were changed? are any of them fouled up? coil packs: When were they changed last? If never, now might be a good time to change them given the mileage. __________________ 12' 335i \| CP-E CP \| MHD \| VRSF DP \| ALPINA B3 \|
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12-07-2017, 10:08 AM	#7
moopdoop Enlisted Member 15 Rep 29 Posts Drives: 2011 335i xDrive Join Date: Sep 2015 Location: Minneapolis iTrader: (0)	For what it's worth, I had really long cranks last winter and assumed it was my HPFP because I was also seeing some related fuel codes getting thrown. Replaced the battery and codes disappeared and cranks went back to normal. Still a bit slower in sub-freezing temps, but nothing like they used to be.
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12-07-2017, 10:29 PM	#8
Whitman158 New Member 0 Rep 11 Posts Drives: 2011 335i xDrive Join Date: Jun 2016 Location: Kentucky iTrader: (0)	Recently had the same issue. Reluctantly bought a new Battery as the local shop (not BMW) couldn't get a good reading. Hooked up a battery tender, replaced the battery, same problem. Took it in for BMW service and guess what ...HPFP failing. only Difference my car is at 51K miles. May not hurt to drop in to a shop to get the HPFP evaluated.
	Appreciate 0 Quote