73 Torino 4-door Losing power/stalling at idle |
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Papeandtaper
New Member Joined: 06-April-2018 Location: Providence, RI Status: Offline Points: 2 |
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Posted: 06-April-2018 at 7:17AM |
Hi All, First post here. I'm glad to have found you all.
I just purchased a 73 Gran Torino 4-door with the original 302 in it. I'm having some issues, which I'll outline here: - Idles fine on start, but once engine warms up it will die if I take my foot off the accelerator - Again, on start it is fine, but once it is warm I lose power on acceleration. It feels like the engine is cutting out momentarily and then coming back in - Even with my foot on the gas, sometimes it will die when I switch from park to drive My first suspicion was a vacuum leak, which may be the case as many hoses are quite old. I'll be spending the weekend tinkering with the idle to see if that's the problem. I also suspect it could be a needle valve issue. If anyone has any experience with such symptoms, any help would be very much appreciated! Many Thanks, Mat
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7T9_Tbird
Senior Member Joined: 04-December-2017 Location: Athens, Alabama Status: Offline Points: 495 |
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Does your motor still have the thermostatic vacuum switch? if so, check it for cracks. i had one in a 71 Mustang(my first car). Was just as you described, and I went round and round with it until I did the wd-40 trick and found the barb for the rubber hose was mostly broken.
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John
79 Thunderbird Heritage 79 Thunderbird Town Landau 02 Ram 1500 Sport Quad Cab |
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Big Bird
Senior Member Joined: 25-August-2013 Location: New York Status: Offline Points: 4194 |
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Another possibility is points/condenser. A weak condenser will act like/feel like a lack of fuel/vacuum type issue and it frequently gets worse with heat.
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"What we do in full frontal view, is more honest than your cleaned-up mind."
Randy 1979 T-Bird 2005 F-150 STX RCSB 4.6, 3.55 LSD How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds? |
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72FordGTS
Admin Group GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5846 |
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What's the idle speed set at when it's warm? What are you running for ignition? What carb, I am assuming stock? Have you checked the if the carb accelerator pump is shooting fuel?
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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Papeandtaper
New Member Joined: 06-April-2018 Location: Providence, RI Status: Offline Points: 2 |
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You seem to have found the issue! I had a couple barbs that were cracked. Installed all new hoses today and it’s running great. Thanks everyone!
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lynchster
Senior Member Joined: 07-January-2006 Location: Pennsylvania Status: Offline Points: 2150 |
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Chuck
72 Gran Torino Sport 13 Taurus SHO "Mr Pig" |
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7T9_Tbird
Senior Member Joined: 04-December-2017 Location: Athens, Alabama Status: Offline Points: 495 |
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John
79 Thunderbird Heritage 79 Thunderbird Town Landau 02 Ram 1500 Sport Quad Cab |
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californiajohnny
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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changinlatitudes
Senior Member Joined: 14-April-2013 Location: Union, MO Status: Offline Points: 554 |
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Matt
1969 Mercury Marauder 390 1972 Montego MX 2003 Mercury Marauder 300A 1994 F-150 5.8 2016 Ford Fusion Titanium |
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