 How much fuel should flow?, Out of fuel pump with EFI |
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| Rocky |
 Oct 4 2009, 07:27 PM
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#1
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From the cockpit  Group: Members Posts: 341 Joined: 24-March 04 From: Gig Harbor,WA Member No.: 1,845  |
My super reliable 75' 1.8 now will not start. It has stock injection. I do have spark! Injectors show no fuel outflow when cranked. I then went to the pump and when cranking over it shows a steady low flow of fuel. Shouldent I see a pretty high rate of pressurized fuel given these are putting out over 20 psi? This is the original fuel pump.
I know I havent posted in a while... Im a looser (IMG:style_emoticons/default/wacko.gif) Rocky |
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| Rocky |
Oct 4 2009, 08:33 PM
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#2
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From the cockpit Group: Members Posts: 341 Joined: 24-March 04 From: Gig Harbor,WA Member No.: 1,845 |
If I assume fuel flow is adequate out of pump but no fuel out of injectors when engine is cranked, any idea next area(s) to check?
Thanks! |
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| type47 |
Oct 5 2009, 05:24 AM
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#3
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
QUOTE(Rocky @ Oct 4 2009, 06:33 PM)  If I assume fuel flow is adequate out of pump but no fuel out of injectors when engine is cranked, any idea next area(s) to check? Sounds like a sudden low flow condition. Any chance that recent work on the car caused a kink in a fuel hose somewhere along the line? |
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| Rocky |
Oct 5 2009, 09:51 AM
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#4
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From the cockpit Group: Members Posts: 341 Joined: 24-March 04 From: Gig Harbor,WA Member No.: 1,845 |
QUOTE(type47 @ Oct 5 2009, 04:24 AM) QUOTE(Rocky @ Oct 4 2009, 06:33 PM) If I assume fuel flow is adequate out of pump but no fuel out of injectors when engine is cranked, any idea next area(s) to check? Sounds like a sudden low flow condition. Any chance that recent work on the car caused a kink in a fuel hose somewhere along the line? Unfortunately or fortunately I havent touched it aside from adjusting the valves after rebuilding it 3 years ago. It has always ran great. |
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Posts in this topic
Rocky How much fuel should flow? Oct 4 2009, 07:27 PM
type47 for a '75, I found in the workshop manual a fi... Oct 4 2009, 08:02 PM 914Sixer Check L-Jet testing info. Fuel pump power does no... Oct 4 2009, 08:23 PM
davesprinkle
If I assume fuel flow is adequate out of pump but... Oct 5 2009, 10:47 AM zonedoubt Check resistor pack, double relay.
Here's a g... Oct 4 2009, 09:49 PM Rocky Yep, its connected.
BTW, nice bike. 400 supers... Oct 5 2009, 11:12 AM davesprinkle Good eye. Yeah, it's a 400 four. My other pr... Oct 5 2009, 03:24 PM r_towle The fuel pump does not come on in Ljet until after... Oct 5 2009, 04:00 PM davesprinkle
The fuel pump does not come on in Ljet until afte... Oct 5 2009, 05:24 PM zonedoubt That's the function of the double relay.
http... Oct 5 2009, 05:33 PM Cap'n Krusty I'm gonna try to get the factory troubleshooti... Oct 5 2009, 06:04 PM Rocky All great advice! I will give it a once over ... Oct 5 2009, 08:01 PM Rocky Im on the road again!!! :driving:
Du... Oct 10 2009, 12:11 PM zonedoubt Good stuff! :headbanger:
L-jet isn't as... Oct 10 2009, 12:26 PM davesprinkle
Good stuff! :headbanger:
L-jet isn't a... Oct 10 2009, 01:22 PM |
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