Engine swap goes wrong Help!
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From: Denver Metro Area, CO
Looking at the plugs directly after trying to start it will tell you for certain if fuel is making its way to the cylinders, no need to guess.
Looking at a blinking light would imply the injectors are injecting, but...
at the right times? The chances of all 8 injectors not working together at the same time are astronomically low, something else is wrong. You need air, fuel and heat (compression) all in the correct proportions at the right times.
Looking at a blinking light would imply the injectors are injecting, but...
at the right times? The chances of all 8 injectors not working together at the same time are astronomically low, something else is wrong. You need air, fuel and heat (compression) all in the correct proportions at the right times.
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From: Wagener, SC
I'll ask this with the risk of offending you, as you sound more than competent as a wrencher, but have you visually confirmed that the dist rotor is pointing at the #1 cap post when at #1 TDC on it's compression stroke?
If I don't ask, we won't know, right?
If I don't ask, we won't know, right?
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From: Virginia
Don't let anyone get you off track, you know it's fuel because it will try to run with the spray in the intake. Just make sure the injectors are firing, and you have fuel pressure on the fuel rail. Just so you know, the injectors are fed 12v on one side all the time(the common colored wire to all of them) and the negative of the injector goes to the computer. The computer grounds the negative of the injector to make it fire.
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From: Olathe
I believe the trucks are batch fire, meaning they all fire all the time, but only half the fuel needed. The first half lays in behind the closed intake valve, and then when it fires the other half of the fuel required, the intake valve opens and lets it all into the cylinder. I am pretty sure the mustangs are sequential injection, it fires each injector just at the right time, unlike the trucks.
Don't let anyone get you off track, you know it's fuel because it will try to run with the spray in the intake. Just make sure the injectors are firing, and you have fuel pressure on the fuel rail. Just so you know, the injectors are fed 12v on one side all the time(the common colored wire to all of them) and the negative of the injector goes to the computer. The computer grounds the negative of the injector to make it fire.
Don't let anyone get you off track, you know it's fuel because it will try to run with the spray in the intake. Just make sure the injectors are firing, and you have fuel pressure on the fuel rail. Just so you know, the injectors are fed 12v on one side all the time(the common colored wire to all of them) and the negative of the injector goes to the computer. The computer grounds the negative of the injector to make it fire.
Very helpful thanks I restore old cars(model A's,lincolns 48-73,40's fords,curently restoring a 1961 triumph tr-3 Car.
I used to work for ford in the late 80's heavy line tech, and I changed a crap load of oil and tires...lol
I also used to work at a Moto Guzzi dealership. and what i know the most about? thats what I ride(2000 Moto Guzzi Bassa 1100),and also do motorcycle painting on the side to make a little extra project funds.
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From: Olathe
No its not getting any fuel at all but it is pulsing.
Now even if its not shooting fuel at the right time wouldn't it still be in there when the spark plug fires at the right time?
Now even if its not shooting fuel at the right time wouldn't it still be in there when the spark plug fires at the right time?
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From: Wagener, SC
Yea, well, then there's that.
Forget about my question a few posts above...
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From: Virginia
I should not have said "we know it's a fuel problem" because there are lots of problems that can cause the injectors not to fire. The end result is no fuel, but the cause can be something else.
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From: Olathe
I think im going to check out the distributor problems,
then im going to pull the 4 injectors i can get to, I am going to cycle the key while there out. see what happons...
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From: Virginia
Also make sure the throttle position sensor and the throttle are ok. I just remembered if the rpm is low, and the throttle is wide open, the computer goes into a "clear flooded engine" mode, and turns the injectors off. I sort of doubt this is the problem, but it's another scenario that could happen if there was something wrong with the throttle position sensor or it's wiring, and the computer thought the throttle was wide open.
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From: Olathe
Ok I'm at work the truck is here
I'm scopeing out my two distributors, they apeir to be identical , but the holifax switch is black on one and blue on the other( the truck one)
Do you think it's color coded?
I'll check with the parts store see if the both use the same dist. Tomorrow
I really need to get that back together before moving on
Thanks i'll keep you guys up to date.
I'm scopeing out my two distributors, they apeir to be identical , but the holifax switch is black on one and blue on the other( the truck one)
Do you think it's color coded?
I'll check with the parts store see if the both use the same dist. Tomorrow
I really need to get that back together before moving on
Thanks i'll keep you guys up to date.
