Carter fuel pump won't pump

[68charger440]

I opened up this carter fuel pump to see if the diaphram was still good.  It looked good so I put it back together and installed it, but it won't pump.  It was sitting on a shelf for a bit.  There is a gasket that looks like it can go two ways the first two pics show the two ways it can go.  Can you take a look at yhese pics and tell me which way is correct?  Also When I opened it up it there was a black piece of foam about the size of the end of my pinky finger and half as thick just rolling around inside. The third pic.  Anyone know what it is? Those pumps don't use a different pushrod, do they?
Thx

[68charger440]

Should the two valves be showing through the gasket opening or just the single?

[68charger440]

I messed up on one of the pics.  Here is the one showing only the single valve through the gasket.

[cdr]

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB8QtwIwAGoVChMIv4O5mv_YxwIVRIwNCh0E-QGe&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dh_UxB1GVLFI&usg=AFQjCNHWUurHyOuit99VBS8VsdxeMz69Qw

[68charger440]

Thanks for tbe link, but I still couldn't tell if the gasket's open half moon should be on the side with the two valves or the side with one.  I'll search youtube for some more videos and see if one can show it clearly.

[cdr]

the one i saw had the 2 in the opening

[68charger440]

I didn't catch that, I'll open it up again.

[Just 6T9 CHGR]

Hows your push rod length???

[68charger440]

Hows your push rod length???

Thats kinda personal.
I asked about that in the beginning of this thread.  It works fine with a stock pump, but I wondered if this carter is supposed to have a longer one.

[cdr]

it uses the stock rod

[Just 6T9 CHGR]

Stock rod BUT it is a harder pump to activate  If the rod is worn down it might not have enough length to activate it correctly

Should be 3.25" in length

[68charger440]

Stock rod BUT it is a harder pump to activate  If the rod is worn down it might not have enough length to activate it correctly

Should be 3.25" in length

Ok, I just got around to pulling the pushrod.  See attached pics.  It is only 3" long and shows a great deal of wear, so I think that may be the problem.  Some questions if you don't mind.
1. I heard there were some good and some bad pushrods out there.  Do you guys know who makes the good ones? 
2. The high volume carter pump takes quite a bit more force than the stock pump.  Is that normal?
3.  How many miles should I expect out of the new pushrod if I continue to use the Carter high volume pump. 
4.  When they wear like that does it usually wipe the cam lobe, or is that usually ok?
Putting on my 20/20 hindsight goggles, the motor was acting like it was starving for fuel when cruising for a little while, but I was dialing in the carb, and thought that was the problem.
Thx

[303 Mopar]

Stock rod BUT it is a harder pump to activate  If the rod is worn down it might not have enough length to activate it correctly

Should be 3.25" in length

Ok, I just got around to pulling the pushrod.  See attached pics.  It is only 3" long and shows a great deal of wear, so I think that may be the problem.  Some questions if you don't mind.
1. I heard there were some good and some bad pushrods out there.  Do you guys know who makes the good ones? 
2. The high volume carter pump takes quite a bit more force than the stock pump.  Is that normal?
3.  How many miles should I expect out of the new pushrod if I continue to use the Carter high volume pump. 
4.  When they wear like that does it usually wipe the cam lobe, or is that usually ok?
Putting on my 20/20 hindsight goggles, the motor was acting like it was starving for fuel when cruising for a little while, but I was dialing in the carb, and thought that was the problem.
Thx

Call Dave at Roseville for the proper pushrod.  You should get plenty of years, 10's of 1000's of miles from the next rod. No harm done to the cam.

[68charger440]

Thanks... I'll give him a call.

[Back N Black]

I had the same pump that you installed and it worn down the push rod in less than 700 miles, the pump arm is too stiff. I went back to the origional pump and no problems and its been 8000 miles.

[68charger440]

I had the same pump that you installed and it worn down the push rod in less than 700 miles, the pump arm is too stiff. I went back to the origional pump and no problems and its been 8000 miles.

I was wondering about that...  that pushrod was up to specs when I built the motor and only has a few thousand miles on it.

[Just 6T9 CHGR]

Winner winner chicken dinner


A 3" rod aint gonna cut it.....thats what SHE said! 


Mancini Racing sells a good rod also

http://www.manciniracing.com/stfupupub426.html

[myk]

Yeah that rod looks pretty worn down. 

And yeah, she said that too....

[Bronzedodge]

Be sure to put some break in lube on both ends of the rod.  Make sure it is on the base of the eccentric - really difficult to bolt down the pump with the rod extended. 

[68charger440]

Yup, I don't want to wipe the lobe or another pushrod, and I guess its time for another oil change too.

[firefighter3931]

Jim,

What oil are you using ? If the oil doesn't have the correct EP additive package the FP pushrod will take a beating 

I ran the HV Carter street pump in my car with no issues. I use & recommend Brad Penn 20/50 semi synthetic race oil and it has lots of extreme pressure additives (zinc/phosphorous) to protect the high stress components. 


Ron

[68charger440]

Jim,

What oil are you using ? If the oil doesn't have the correct EP additive package the FP pushrod will take a beating 

I ran the HV Carter street pump in my car with no issues. I use & recommend Brad Penn 20/50 semi synthetic race oil and it has lots of extreme pressure additives (zinc/phosphorous) to protect the high stress components. 


Ron

Hi Ron,
I am using regular Pennzoil 10/40.  I'll be sure to switch and give that Brad Penn 20/50 a try.  Is that available at any of the chain stores, or is it special order stuff?  I think I'll pull the pump every thousand miles or so for a while just to keep a close eye on that rod. 
Do you recall on that pump which way that gasket goes inside (see pics above), with the two valves showing through the opening in the gasket or just one valve showing?  It can go together either way, and I've had differing opinions on it.  I was hoping to find some official rebuild instructions but haven't found any yet.
Thanks

[ws23rt]

Their is an exploded view of that pump in the 69 FSM.  It shows the "air dome diaphragm" (gasket) positioned so the twin valves are showing through the hole.

[68charger440]

Their is an exploded view of that pump in the 69 FSM.  It shows the "air dome diaphragm" (gasket) positioned so the twin valves are showing through the hole.

Great!
Thanks so much!

[firefighter3931]

Their is an exploded view of that pump in the 69 FSM.  It shows the "air dome diaphragm" (gasket) positioned so the twin valves are showing through the hole.

That is my recollection as well....but it's been many years since I had one of those apart. I believe Mancini carries the rebuild kit for those pumps 

Hi Ron,
I am using regular Pennzoil 10/40.  I'll be sure to switch and give that Brad Penn 20/50 a try.  Is that available at any of the chain stores, or is it special order stuff?  I think I'll pull the pump every thousand miles or so for a while just to keep a close eye on that rod.
 

The std passenger car oil does not have enough zinc/phos for our old Hot Rod's 

Most parts stores won't stock Brad Penn but might be able to order some in for you ? I'd call and ask. The Brad Penn website might have a dealer list ? Or maybe call them to see who in your area is a retailer ?



Ron