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| Fuel pump... What am I missing? https://slantsix.org/forum/viewtopic.php?t=62267 |
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| Author: | burgmopar [ Sat Apr 28, 2018 2:22 pm ] |
| Post subject: | Fuel pump... What am I missing? |
So, I'm working on a 71 Dart, but can't get fuel to the carb. I replaced the fuel pump and attempted to draw fuel from a portable can. I've also disconnected the line to the carb, but don't see any fuel making it there. The line is clear of clogs. No fuel when cranking engine. So, I removed and reinstalled the new fuel pump to verify arm is making contact with Cam and... Still no fuel. What am I missing? It is a brand new fuel pump from NAPA. Thanks in advance for your suggestions! burg |
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| Author: | GTS225 [ Sat Apr 28, 2018 3:07 pm ] |
| Post subject: | Re: Fuel pump... What am I missing? |
Have you confirmed that you have a clear line form the tank to the pump? Paper fuel filters are known to get blocked by water in the filter. I've seen more than once, water in a paper filter, and it wouldn't flow gas. I have known of old rubber fuel hose to get blocked by the inner wall peeling loose and stopping fuel flow. Is your needle/seat stuck in the closed position? Roger |
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| Author: | slantzilla [ Sat Apr 28, 2018 3:22 pm ] |
| Post subject: | Re: Fuel pump... What am I missing? |
Is the pump lobe worn flat on the cam? |
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| Author: | burgmopar [ Sat Apr 28, 2018 3:36 pm ] |
| Post subject: | Re: Fuel pump... What am I missing? |
Well, I may have cried wolf too soon... It looks like I didn't have enough fuel in the temporary can to develop any head pressure. With a full can it immediately filled the filter with fuel and started up when connected to carb. I'm still planning to replace the tank and sending unit, but first I will need to diagnose the blue cloud! Thanks for the suggestions! burg |
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| Author: | GTS225 [ Sat Apr 28, 2018 5:12 pm ] |
| Post subject: | Re: Fuel pump... What am I missing? |
You're welcome. "Blue cloud" at startup, then it clears, or is it constant? Roger |
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| Author: | burgmopar [ Sat Apr 28, 2018 6:45 pm ] |
| Post subject: | Re: Fuel pump... What am I missing? |
Blue cloud when rpms higher than idle. I'm hoping it's just valve seats leaking, or it could be sticking rings. I started with the fuel pump and fresh oil and filter to confirm it would run, but it needs several more tune up items before I test drive it. burg |
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| Author: | GTS225 [ Sun Apr 29, 2018 3:42 am ] |
| Post subject: | Re: Fuel pump... What am I missing? |
You could be correct. If this car sat for a long time, the problems may just go away with a tuneup and a little running time. You might want to pull the plugs for a look-see. That could give you more information for a diagnosis. Roger |
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| Author: | slantzilla [ Sun Apr 29, 2018 8:11 am ] |
| Post subject: | Re: Fuel pump... What am I missing? |
https://www.youtube.com/watch?v=AynXoLjYrKc
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