Idle concerns

[Jim Nolan]

With the cams reset after full porting will there be a lope in idle? The RPM is about 900. The second issue is when I get on it there seems to be little difference with key on or off, RC injectors installed 2 years ago. I am debating wether to pull the plenum off and check the secondary advance. I put a vacuum gage on with engine running and it holds about 23 hg. SW headers also. Any thoughts.

[jonszr1]

i dont think you should have any lope , my callaway car has the cam timing redone and its smooth. by advance you do mean the opening of the secondary vac system???/when you turn the car on does the pump go on and then stop ?what year is your car????if its a 91-95 do you have the prom changed so the valet key is allways on ???.you might ck the fuse for your sec system its on the drivers side wheel well if its a 90 . sounds like your valet key is either turned off , switch is bad or fuse is out. other chime in ,but thats what little i know hope it helps

[Jim Nolan]

The e-prom has been reflashed but not for constant key on. I can go key on during hard acceleration and feel a little more power but not much. I was wondering if the secondaries on one side were not working would it just be a lack of power or a noticable miss or what. At idle it may look like a lope or a miss but no miss is noticed at full throttle. The pump does go on then off. It's a '92

Jim, when you say lope, is the whole car shaking? Or can you just hear the lope in the exhaust?

[Jim Nolan]

The engine has a has a slight even shake that reminds me of my old '66 327/350.

Sounds like a miss. Check spark.

[Kb7tif]

Let it warm up real good Listen to your tailpipes for a miss.. Both sides should be close.

[ZR1ROB]

you should feel a little lurch around 3K. if not, your secondary system isnt coming on. maybe the key circuit - a tech1 will tell you that. The green light is controlled by the ECM so if you see it, then the key circuit is working - the tech1 really isnt necessary for that. spark was mentioned, check your plugs - make sure they are torqued to spec - 20Nm. and make sure the plug wires are connected securely. It could be your secondary fuel pump is bad, or the relay for the secondary injectors is bad, or a wire is cut. Any codes? check your fuel pump fuses - there are two. and check the injector fuses, 2 too! sooty black exhaust? again, maybe a bad plug or wire.

[Demps]

Jim,
Come over to Ft Walton and we'll check it out.
Ted

[Jim Nolan]

Where at in Ft. Walton. I'm pretty familiar with the area as I lived there for 20 years.