When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Compare your wires to this and make sure they are in the exact same order. This is what the timing marks look like. You remove and plug the distributor vac advance and connect the timing light pick up on the #1 plug wire and then simply aim light at this thing while engine is running and observe the number indicated by mark. Youtube and google are your friend.
Compare your wires to this and make sure they are in the exact same order. This is what the timing marks look like. You remove and plug the distributor vac advance and connect the timing light pick up on the #1 plug wire and then simply aim light at this thing while engine is running and observe the number indicated by mark. Youtube and google are your friend.
A couple wires out of firing order won't necessarily idle all that bad, a little rough. Will definitely be down on power, and likely backfire. It is always something to doublecheck with a "new" car or truck that isn't running right. Happens more often than you might think, more than one used car has been bought for a song in a private sale. New owner connects plug wires in proper order, starts it up, drives away. Former owner pissed off, much drama ensues. LOL!!
Just noticed this statement. Time to put on my Sherlock Holmes cap and light my pipe.
Have you been driving the truck all this time and these are new symptoms? Or was the truck parked the whole time and you're trying to resurrect it?
For the record I double checked the wires and they were correct on the distributor. I’ve driven it on and off since I got it. Not a resurrection... it’s not a daily driver but typically I drive it or start it every week. It all started with stalling out and low idle this spring/early summer.
typically I drive it or start it every week. It all started with stalling out and low idle this spring/early summer.
Another thought, in a little different direction: How much have you driven the truck since the problem started? I assume (Danger! Danger!) the truck drove reasonably well before all of this. And then seemingly out of the blue, the engine starts acting up. What if you got a tank full of bad fuel?
Two possibilities here.
1) If the truck suddenly started running poorly, you've barely driven it since then and you've still got bad fuel in the tank.
2) Even if you've had several fillups since then, that one bad tank may have either dissolved some old varnish in the tank, or simply left some crud that's clogging up things.
Another thought, in a little different direction: How much have you driven the truck since the problem started? I assume (Danger! Danger!) the truck drove reasonably well before all of this. And then seemingly out of the blue, the engine starts acting up. What if you got a tank full of bad fuel?
Two possibilities here.
1) If the truck suddenly started running poorly, you've barely driven it since then and you've still got bad fuel in the tank.
2) Even if you've had several fillups since then, that one bad tank may have either dissolved some old varnish in the tank, or simply left some crud that's clogging up things.
So last winter I had a break line issue and it sat for a few months. Since then it’s had several tanks of gas. I filled it up the other day. I’m not saying it’s not a gas issue but I’m not sure. If so... what would the cure be anyway?
Several tanks since then, that’s good. I’d suggest checking pressure and volume at the carb inlet, just part of some basic diagnostics.
I just realized I do have a holly fuel pressure gauge and what looks to be a fuel pressure regulator hooked up. I'll have to check the reading... what should i be looking for?
I just realized I do have a holly fuel pressure gauge and what looks to be a fuel pressure regulator hooked up. I'll have to check the reading... what should i be looking for?
This was while running. That’s not reading 0 it’s reading 15+
I tried to adjust the fuel pressure regulator and it dropped to like 14 psi but that was with the screw all the way down. All that said when the truck was completely off the gauge still say where you see it in the picture. My guess is a faulty gauge?
On another note, I traced the fuel line all the way back to the rear tank (all I have) and came across the fuel filter but could not find a fuel pump. I’m serious... the fuel line connected to that regulator is goes straight to rear tank and only thing attached to it is a fuel filter. I guess it’s in or near the tank?
Do you still have an EGR? If so it could be stuck open a little which creates a big vacuum leak and all the big vacuum leak problems like rough idle and stalling.
I run manifold vacuum on my 460 and when the vacuum advance diaphragm on the dizzy went bad, in gear idle RPM dropped down to 525 ish but it otherwise idled and ran okay.
My stock 86 460 has the fuel pump in the tank. Hard to believe 15 PSI fuel pressure. I would think the carb would be running over! Stock fuel pressure is 8 PSI for a Holley but I think you need A little less for an Eddie.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
