I purchased an L- jet Spider that had been sitting for 17 years. I replaced all the wires, plugs, cap, rotor, along with injectors, fuel pumps, FPR, and hoses but still ran rough. Found a few vacuum lines that were compromised. Still ran rough. Finally found all the vacuum leaks and now she runs fine. I HIGHLY suggest running through the L-jet troubleshooting guide and take nothing for granted. The smallest vacuum leak will make the car run poorly. Good luck! I know you will find your issue...
A great way to find vacuum leaks is with a spray bottle of starting fluid. If you spray it around the various vacuum sources and air ducts a vacuum leak will show up as a change in idle speed. You can also use something non-flammable like brake cleaner. WD-40 works too, but its still flammable and messy.
1969 GTV 1750
San Diego, CA
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