Hello, I have the above mentioned configuration.
I did a tune up a week ago (cap, rotor, plugs, wires, CTS) to address what I thought was a bad ignition set, because I have noticed when my truck gets warm it runs much worse and shudders on acceleration and misfires.
No improvement after these replacements; I have fully verified the job was done properly, and timing was dead on at 4 degrees when checked with a light.
However, today, my truck has been CONSTANTLY misfiring, from cold start through to warm. It also idles incredibly badly, sounds like it wants to die, and is completely gutless. It surges and bogs, and to get anywhere in it I have to gently feather the throttle.
Not only that, but when I am at high speeds (50+) and I take my foot off the gas, it backfires, loudly. Like a gunshot going off.
The fuel pump makes noise when I prime it, the whirring noise that is normal. I replaced the filter and tested pressure with a loaned autozone gauge and I got like 20+ psi. Not sure what that's about.
I am at a loss for what is next. I have trawled the forums and I frankly don't know what to check next. What could possibly cause it to suddenly run THIS badly? It's practically unrivaled, but by some miracle it doesn't die.
I did a tune up a week ago (cap, rotor, plugs, wires, CTS) to address what I thought was a bad ignition set, because I have noticed when my truck gets warm it runs much worse and shudders on acceleration and misfires.
No improvement after these replacements; I have fully verified the job was done properly, and timing was dead on at 4 degrees when checked with a light.
However, today, my truck has been CONSTANTLY misfiring, from cold start through to warm. It also idles incredibly badly, sounds like it wants to die, and is completely gutless. It surges and bogs, and to get anywhere in it I have to gently feather the throttle.
Not only that, but when I am at high speeds (50+) and I take my foot off the gas, it backfires, loudly. Like a gunshot going off.
The fuel pump makes noise when I prime it, the whirring noise that is normal. I replaced the filter and tested pressure with a loaned autozone gauge and I got like 20+ psi. Not sure what that's about.
I am at a loss for what is next. I have trawled the forums and I frankly don't know what to check next. What could possibly cause it to suddenly run THIS badly? It's practically unrivaled, but by some miracle it doesn't die.
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