stalling issues
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stalling issues
I have a 1970 f100 with a 390 and a 3 on the tree. Updates includes: pertronix I ignition, flame thrower coil. Plus spark plugs. Holley electric fuel pump and holley 4 barrel carb. My would sometimes stall and is hard to start afterwards. Sometimes it will start in 5 minutes. Also if i drive about 5 miles and cut it off for more than 10 minutes its very hard to start. The stalling seems like lost of power electrically not like lack of gas.
Thanks
Thanks
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
When it won't start:
Is the starter spinning the engine over normal speed?
Is the coil real hot to the touch?
Is there 12V at the coil's + terminal while you cranking the starter?
Anything happen lately to the truck? Critters eating wires ETC.
Is the starter spinning the engine over normal speed?
Is the coil real hot to the touch?
Is there 12V at the coil's + terminal while you cranking the starter?
Anything happen lately to the truck? Critters eating wires ETC.
Laughing Gas
Joined: Mar 2013
Posts: 1,027
Likes: 5
From: Garner NC
Check the choke position. Closed when cold, open when hot. Might have an intermittent connection of the electric choke (I'm guessing you have one vs the choke stove variety). Or just might be sticky because it's been running rich. Make sure it goes back to closed if you operate it by hand with the engine cold and not running.
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Is the starter spinning the engine over normal speed? Not sure what u mean by this
Is the coil real hot to the touch? No
Is there 12V at the coil's + terminal while you cranking the starter? Not sure
Anything happen lately to the truck? Critters eating wires ETC.no
Fyi, it cranks easily in 25 degree mornings.
Thx
Is the coil real hot to the touch? No
Is there 12V at the coil's + terminal while you cranking the starter? Not sure
Anything happen lately to the truck? Critters eating wires ETC.no
Fyi, it cranks easily in 25 degree mornings.
Thx
Thread Starter
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New User
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Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Is the starter spinning the engine over normal speed? Not sure what u mean by this
Is the coil real hot to the touch? No
Is there 12V at the coil's + terminal while you cranking the starter? Not sure
Anything happen lately to the truck? Critters eating wires ETC.no
Fyi, it cranks easily in 25 degree mornings.
Thx
Is the coil real hot to the touch? No
Is there 12V at the coil's + terminal while you cranking the starter? Not sure
Anything happen lately to the truck? Critters eating wires ETC.no
Fyi, it cranks easily in 25 degree mornings.
Thx
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Lead Driver
Joined: Aug 2003
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From: **** hole San Jose ca.
Electric fuel pumps are known for having to high of fuel pressure an cause flooding. The fuel pressure should about 5-6 psi You may want to check fuel float lever for being to high. Side screw on float bowel. Gas level should be just at the bottom of the threads and not running out while engine is running..
You should have a fuel regulator with a gauge when using a electric fuel pump ..
orich
You should have a fuel regulator with a gauge when using a electric fuel pump ..
orich
