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Update:
Hello all,
I've been really busy and haven't had much time to double check everything or drive much. However after replacing the divertor vavle the engine is running much smoother with less hesitation.
I took it out on a long trip Saturday (in the morning, about 85 degrees) was running on the back tank (the fuel gauge isn't working on that one) at the half way point I switched to the front tank for the drive home. About 1/2 mile from the house got a little hesitation and acting up when going up a long 20 degree slope, nothing really troubling after such a good run.
I went out yesterday afternoon around 4 (about 100 degrees outside), started out using the front tank, as soon as I got out to the main road it started acting up again, huge hesitation, died on me twice, restarted after cranking for a bit, like the fuel bowls were dry. Switched to rear tank after a minute or so of idling on the side of the road, turned around and went home, about the time I got there it started smoothing out and running better.
The way the truck is geared at 55mph I'm turning about 2600 rpms, it will run and then when it starts to cut out I push in the clutch and slow down, it really acts like a fuel starvation issue, however could it be the ignition control module acting up.
The sending units I found were:
Spectra Premium SP225H (rear)
Spectra Premium SP384H (front)
Another issue I thought maybe would the Ethanol in the fuel be causing issues? State law requires a minimum of 10% in all fuel sold. I work at a small engine shop and most of what we see are fuel related issues from bad fuel. Most of the fuel we test is running between 20-30% Ethanol. We've found with the 91 octane that it is closer to the 10% the state requires, so that is all I run on my newer vehicles. I put 91 in the '85, but has anyone else seen issues with these older carburated engines.
I've been really busy and haven't had much time to double check everything or drive much. However after replacing the divertor vavle the engine is running much smoother with less hesitation.
I took it out on a long trip Saturday (in the morning, about 85 degrees) was running on the back tank (the fuel gauge isn't working on that one) at the half way point I switched to the front tank for the drive home. About 1/2 mile from the house got a little hesitation and acting up when going up a long 20 degree slope, nothing really troubling after such a good run.
I went out yesterday afternoon around 4 (about 100 degrees outside), started out using the front tank, as soon as I got out to the main road it started acting up again, huge hesitation, died on me twice, restarted after cranking for a bit, like the fuel bowls were dry. Switched to rear tank after a minute or so of idling on the side of the road, turned around and went home, about the time I got there it started smoothing out and running better.
The way the truck is geared at 55mph I'm turning about 2600 rpms, it will run and then when it starts to cut out I push in the clutch and slow down, it really acts like a fuel starvation issue, however could it be the ignition control module acting up.
The sending units I found were:
Spectra Premium SP225H (rear)
Spectra Premium SP384H (front)
Another issue I thought maybe would the Ethanol in the fuel be causing issues? State law requires a minimum of 10% in all fuel sold. I work at a small engine shop and most of what we see are fuel related issues from bad fuel. Most of the fuel we test is running between 20-30% Ethanol. We've found with the 91 octane that it is closer to the 10% the state requires, so that is all I run on my newer vehicles. I put 91 in the '85, but has anyone else seen issues with these older carburated engines.
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