351w no go
Thread Starter
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Senior User
Joined: May 2004
Posts: 149
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From: Spokane
ok, i installed the filter, set the timing.... problem still exists. advance timing, retard timing, same problem.... set it again, let the choke plate loose, problem got worse, tied the plate back to WOT, and now it's back to where i started. Tried the vacuum test, checks out fine. going to limp it home for a ten mile crawl.
does my carb have a power valve and could that be it?
anyone think i could have a burnt exhaust valve?
i'm trying everything i can, and taking every one of your sugestions. should I dump some seafoam in and pray?
does my carb have a power valve and could that be it?
anyone think i could have a burnt exhaust valve?
i'm trying everything i can, and taking every one of your sugestions. should I dump some seafoam in and pray?
Thread Starter
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Senior User
Joined: May 2004
Posts: 149
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From: Spokane
ok, so much for driving it home.....
now it idles a bit rough, in gear it wants to die. half throttle it still idles, WOT kills it, dead. won't go anywhere. i'm bout to take it to a mechanic, throw a few hundred bucks in front of his face, and leave.
everything is set to manufacturer spec. Fires up quicker than it ever has, just won't go.
now it idles a bit rough, in gear it wants to die. half throttle it still idles, WOT kills it, dead. won't go anywhere. i'm bout to take it to a mechanic, throw a few hundred bucks in front of his face, and leave.
everything is set to manufacturer spec. Fires up quicker than it ever has, just won't go.
Posting Guru
Joined: Sep 2005
Posts: 2,238
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From: Kiefer, Northeastern Okla
I HAVE had a power valve go bad, but on an older carb it's more likely an accelerator pump diaphragm. Is it leaking at all on the front of the carb where the plunger goes in? A carb rebuild isn't really hard, and a heck of a lot cheaper than a new one (about $15 vs. $200). That APD is a VERY thin membrane, almost like a latex glove. All it takes is a pinhole to mess one up. Fixing the choke should be first priority, though.
Pete
Pete
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Senior User
Joined: May 2004
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From: Spokane
i don't think it's the accelerator pump.... in park and neutral, it revs up to about 5k rpm fine..... it's the drive that kills it. having the choke wide open shouldn't kill it either. no leaks on the carb, gaskets are good. there is an exhaust leak due to warped headers. was about to put exhaust manifolds on it till this came up.
Thread Starter
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Senior User
Joined: May 2004
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From: Spokane
Ill get back to it and check for cats around noon PST tomorrow. till then i hope i don't have nightmares about it!
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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Parts List 95.2AH
E5PZ-9A586-D .. Carb Kit (Motorcraft CT-1467)
The following parts are with the kit, or can be bought separate.
E3ZZ-9B559-A .. Acc Pump Diaphram (Motorcraft CM-4026) comes with kit
E2TZ-9A565-A .. Power Valve (Motorcraft CE-217)
E3ZZ-9576-A .. Acc. Pump Check Valve (Motorcraft CM-4027)
Take care when removing the acc pump diaphram, there's a coil spring behind it.
E5PZ-9A586-D .. Carb Kit (Motorcraft CT-1467)
The following parts are with the kit, or can be bought separate.
E3ZZ-9B559-A .. Acc Pump Diaphram (Motorcraft CM-4026) comes with kit
E2TZ-9A565-A .. Power Valve (Motorcraft CE-217)
E3ZZ-9576-A .. Acc. Pump Check Valve (Motorcraft CM-4027)
Take care when removing the acc pump diaphram, there's a coil spring behind it.
Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
Generally if it has ever backfired through the carb is what will blow the power valve. Very thin diaphram. Not recomended for birth control. HAAA Try droping yer exaust at the Header collector and see if it runs better, This will tell if the cats or other exaust restrition is the problem. I'm still thinking vacuum leak or timing. Pull the cap off the Dizzy and rock the engine back and forth by hand to see how much the crank moves before the Rotor in the Dizzy does. Then bring the timing mark to TDC on the power stroke for # 1 and see if the rotor is pointing at the # 1 plug on the cap. This will tell us if the timing chain has to much play and or if it has jumped time.
Thread Starter
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Senior User
Joined: May 2004
Posts: 149
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From: Spokane
thanx much arctic!! that gives me a few hours of play time with it. no cats, str8 pipe with dual glass paks. Ill let ya know how the timing goes!
Thanx for the info dummy.... i'm gonna get a kit next week
Thanx for the info dummy.... i'm gonna get a kit next week
Thread Starter
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Senior User
Joined: May 2004
Posts: 149
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From: Spokane
update:
It's come down to the carb kit. couldn't find one for it, had to do research.... come to find out.....IT'S A 2150 FROM A 351M!!!! # D7TE-AYA
so I have a 2bbl from a big block on my winsor.
"carb expert" told me it sounds like the enrichment valve.
after messin with it for a week, i set the timing and hooked everything back up.
Now it won't idle and when i do give it throttle it dies!?!?!?
found a kit for this carb... any ideas before i spend another $30 on a kit?
It's come down to the carb kit. couldn't find one for it, had to do research.... come to find out.....IT'S A 2150 FROM A 351M!!!! # D7TE-AYA
so I have a 2bbl from a big block on my winsor.
"carb expert" told me it sounds like the enrichment valve.
after messin with it for a week, i set the timing and hooked everything back up.
Now it won't idle and when i do give it throttle it dies!?!?!?
found a kit for this carb... any ideas before i spend another $30 on a kit?
Thread Starter
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Senior User
Joined: May 2004
Posts: 149
Likes: 0
From: Spokane
DONE!!!
Tried the carb kit... turned out the needle was completely rounded off, almost flat. swap the needle and runs great!! then got back in there and replaced everything else.
Thanx for all the help!! It made these repairs quite the adventure, and taught me an awful lot about my truck! Good work everyone!
Tried the carb kit... turned out the needle was completely rounded off, almost flat. swap the needle and runs great!! then got back in there and replaced everything else.
Thanx for all the help!! It made these repairs quite the adventure, and taught me an awful lot about my truck! Good work everyone!