[DeTomaso] Fuel Pump replacement

[wkooiman at earthlink.net]

>> In the photo, it is in the worst possible location for 
>> installing a fuel pump, as the lever is fully depressed.   If the cam was 
>> rotated 180 degrees, the eccentric would be in the best possible position, and you 
>> could easily just slot the pump into position.

And you might notice that the best possible position is also TDC.  I believe the best possible position is TDC with #1 not in the power stroke, so rotate it to TDC, check to see if the rotor is pointing to #1.  If it is, rotate it to the next TDC (180 out), and that's where you want the crank when you reinstall the fuel pump.


-----Original Message-----
>From: MikeLDrew at aol.com
>Sent: Jan 4, 2012 2:47 PM
>To: tmshinro at aol.com, detomaso at realbig.com
>Subject: Re: [DeTomaso] Fuel Pump replacement
>
>
>In a message dated 1/4/12 11 41 20, tmshinro at aol.com writes:
>
>
>> I need to replace my leaking fuel pump and intended to do it when things 
>> warm up in the spring.   We are having a very mild winter here in Iowa so 
>> far with no snow and it is supposed to get near a record high of 52 
>> tomorrow, so I'm thinking on getting the job done tomorrow.  I've never replaced a 
>> fuel pump before so I have a couple of questions.
>> 
>> 1.   I want to remove the oil filter to give more room to access the 
>> mounting bolts.   Can I take the oil filter off without draining the oil, or 
>> stated another way, if I take the oil filter off will oil leak out of the 
>> block where it mounts?  
>> 
>>>>Just a bit of a dribble; it shouldn't pour out.   The oil is sucked up 
>from the pan by the oil pump, then sent through to the filter, only when the 
>engine is running.   When you shut it off, the oil dribbles back down into 
>the pan.   So you should be fine.
>
>
>> > I have one of those 10 quart oil pans that only hold 7 or 8 quarts, if 
>> that makes a difference.  BTW...I checked the dip stick for signs of gas in 
>> the oil and didn't see any (no increased level and no smell). 
>> 
>>>>Be glad!
>> 
>> >2.  Do I need to use gasket sealer or is it a dry fit?  
>> 
>>>>It's a dry fit, with the included gasket.   You'll want to scrape off 
>the old gasket and install the new one that will come with the pump.
>> 
>> >3.  Does it make any real difference on the crank position to the 
>> install?
>> 
>>>>Yes--it is MUCH easier to do it if the crank (actually the cam) is in a 
>certain position.
>
>Take a look at the front of my engine:
>
>http://www.poca.com/index.php/gallery/?g2_itemId=34542
>
>This gives an excellent view showing how the fuel pump works.   The 
>eccentric mounted to the front of the cam rotates, and in so doing, pushes the 
>lever up and down.   In the photo, it is in the worst possible location for 
>installing a fuel pump, as the lever is fully depressed.   If the cam was 
>rotated 180 degrees, the eccentric would be in the best possible position, and you 
>could easily just slot the pump into position.
>
>Mike
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