Cool fuel pressure regulator

aero3113

Does anyone know of a reasonable source for a regulator? I found that the vacuum tube on my starboard side is loose. The prices seem crazy for OEM.

reneechris14

There is one in the fuel module and one on the fuel rail. When bought my 342 the one in the fuel module had the vacuum line for the impeller housing hooked to it. 

aero3113

@reneechris14 , the regulator that’s on the fuel rail, is that the same part number or different?

tazdevil

if its the one on the coolfuel gen 2 with dual pumps i do believe its the same as an audi fuel pressure regulator actually there arent that many regulators and merc uses off the shelfparts same as iac valve on mpi is actually a ford windstar 2001 iac  

reneechris14

885174 is the part number for the one on the rail
$227 
892681 is the one on the module 
$91.88 

reneechris14

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reneechris14

BB Fuel Pressure Regulator for Volvo Penta and Mercruiser 4.3, 5.0, 5.7 https://www.amazon.com/dp/B078P7BQJY/ref=cm_sw_r_cp_apa_i_ObHqEbEWMKBJZ

reneechris14

How can one place get $300 bucks and the other guy only want 30 buck???

aero3113

I was able to get a Quicksilver 892681 for $70 on eBay.

aero3113

Yea, the pricing is just crazy. Probably a $3 part to make.

rasbury

So, if you were having possibly fuel related issues and you check your fuel rail pressure, you might think one of the two(?) Fuel pumps are bad but it could be one of the two fuel pressure regulators? Man! What prompted you to change yours aero?

aero3113

@rasbury , the vacuum tube on it was loose. I’m guessing the weld or epoxy broke.

aero3113

Does anyone know if you can cross reference these numbers on the regulator to a part number? I’m not 100% sure but I think the wrong regulator was installed on my port side module. The second pic is the new regulator that I believe is correct. The part number for the new regulator is 892681.

aero3113

Now I’m really confused. My starboard side regulator matches the one that came out on the port side. 

aero3113

The new regulator is 43.511 PSI (300 kpa) the old one is 41.77 PSI (288 kpa). What one seems like the correct PSI regulator??

aero3113

@Alswagg , do you happen to know if Mercruiser changed the part number on the cool fuel regulator? Why would the new part number be almost a 2 psi (1.74 psi) difference?

reneechris14

this says all ecm models 2002 and up, mine runs at 43 psi so 300kPa sounds right to me.

aero3113

Thank you @reneechris14 , just what I was looking for!!

aero3113

So I guess if I’m replacing one 288 kpa with a 300 kpa on the port module, I should replace the regulator on the starboard module to match?

reneechris14

I copied that out of a merc manual 
Bet the other one is the 300kPa

aero3113

reneechris14 said:

I copied that out of a merc manual 
Bet the other one is the 300kPa

No, I checked the other day, it’s a 288 kpa. 

Black_Diamond

how easy were you able to get to that regulator?  

aero3113

@Black_Diamond , On my 330 it’s pretty easy to access. I would think the same for most models.

aero3113

New regulator is in on port side. It was tough to get in, I had to use the bolts to draw it in even with lube on the o-rings. I should have the new starboard regulator sometime next week. The vacuum tube pulled right out on the old regulator, definitely would’ve caused some issues.

reneechris14

Make sure that vacuum line goes up to the manifold and not the one for the raw water pump. That's the one that was on mine when I bought my boat.

reneechris14

Forget what I said you have a different housing on your pump then I do.

rinker270nb

What were your symptoms for needing to change the regulator?  My engine doesn't like to start when it's warm, needs throttle to start if engine temp is warm/ hot. I changed the temp sensor and no change.  Hunting for cure here.  Thanks! 

aero3113

@rinker270nb , the only reason I had to replace it was because the vacuum tube weld came loose. 

rinker270nb

Thanks!!