I'm trying to get a smooth idle. Just had injectors checked and ultrasonically cleaned, cleaned VSP filter, checked regulator (no fuel in vac line), checked plug cap resistance (all were around 4.5 ohms), sync'd the throttle plates, then adjusted the TPS to .51 V at with closed throttle plates (it was at .46V).
Warmed up engine, then I used the tach on the dash to set the idle, but at 750 rpm it wants to quit and won't start unless you "choke" it and/or goose it a little upon firing. So I increased it a little (tach now says about 800 - 850 rpm in gear idling). Now, it doesn't seem to want to quit as bad, but it feels like it has a dead miss when idling in gear; the engine goes, "rump, rump, rump, rump....."
The plugs are newish...maybe 10 hours. It runs great off idle, does 68mph and feels strong. Only at idle does the miss seem to occur.
I understand the VX does NOT cut out cylinders at low speed, so I'm thinking I may have a bad spark situation on 1 or 2 cylinders at low rpm (plugs, wires, coil, etc...).
Before I start pulling plug wires and getting jolted and possibly having a heart attack, falling off the boat and drowning, I thought I would ask for some professional help here. Please reply on the course of action I should take to put the purr in my idle.
Thanks in advance!
Warmed up engine, then I used the tach on the dash to set the idle, but at 750 rpm it wants to quit and won't start unless you "choke" it and/or goose it a little upon firing. So I increased it a little (tach now says about 800 - 850 rpm in gear idling). Now, it doesn't seem to want to quit as bad, but it feels like it has a dead miss when idling in gear; the engine goes, "rump, rump, rump, rump....."
The plugs are newish...maybe 10 hours. It runs great off idle, does 68mph and feels strong. Only at idle does the miss seem to occur.
I understand the VX does NOT cut out cylinders at low speed, so I'm thinking I may have a bad spark situation on 1 or 2 cylinders at low rpm (plugs, wires, coil, etc...).
Before I start pulling plug wires and getting jolted and possibly having a heart attack, falling off the boat and drowning, I thought I would ask for some professional help here. Please reply on the course of action I should take to put the purr in my idle.
Thanks in advance!
Comment