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Hello. What is the issue?
Has a hard miss. Struggles to go faster that 40-50 due to the hard miss. The warmer it gets the worse it drives. Idles ok but mis fire under a load. Can't get it to throw any codes
I have worked on several of these, and for some reason they rarely throw a misfire code.
By what you are describing I highly doubt it is a vacuum issue.
Do you have any diagnostic equipment?
Just an OBD II scanner
Ok, a scan tool so that you could look at fuel trims would be very helpful, but I may be able to walk you through some basics.
The first thing I would try is to find the cylinder or cylinders that are missing.
Are you comfortable doing a few test?
If you are then try this.
Start the vehicle, then unhook one fuel injector at the electrical connector and listen to the engine to see if there is any change in how it running. If it runs worse you know that cylinder is firing, if it makes no change then that one might be one that has an issue.
Let me know what you find.
Ok. I will have to pick this up later this evening. I'm not near the car atm
OK, let me know.