243
04-24-2002, 12:28 AM
I can handle the weaving due to a bad steering box, I can handle the washboard ride due to bad shocks, springs and bushings, I can deal with the water leaks when it rains, I can deal deal with the windows that won't roll up and down due to bad window channels...
But I'll tell you what is killing me, the whole **** truck shakes when idling in drive and it is running rich as hell.
I fixed a bunch of vacuum leaks a few weeks ago and the truck was awesome. But then a few vacuum leaks returned. I re-adjusted the idle mixture and it does not seem to help, at least like it did previously. I was getting 22Hg vacuum and I am now around 18Hg. It sure points to another vacuum leak but I have not found it, yet.
I have not checked the EGR valve which is not hooked up, but, is it a possible source of a vacuum leak?
Second problem, running rich at idle. Not a little, a LOT and there is no way in hell I'll pass the emission test in the next couple of weeks...it's bad.
Along with the TFI upgrade, I have a Holley 300Z intake manifold and an Edelbrock 1406. I have recently replaced the plugs, wires, cap, rotor and coil (MSD Blaster). Last night, I chocked the wheels, started the motor and put it in drive. I then grounded each spark plug by piercing the plug boot at the distributor to see if any plugs were not firing. #3 did not seem to show a change in idle so I switch the #1 and #3 wires, #1 dropped idle speed dropped when grounded but #3 didn't. Common sense tells me that the #3 wire was not bad but it was not getting enough spark through the distributor. I am not sure if a distributor can halfway fail, I pulled the cap and rotor and it appears to be a magnetic pickup system. All of the pieces are intact although the star piece on the distributor was dirty/rusty.
Will a magnetic pickup be affected by the dirty contact area on the star mounted to the distributor shaft?
I am out of money for a while, but I am thinking that a new distributor may be good insurance. I am contemplating an MSD6 box but only if the benefit will show at idle. I will probably have to pull the intake and put new gaskets under it and check for cracks.
Believe me, I'm not looking for sympathy...on the other hand, if you have advice on the distributor or the MSD6 box ect. let me know.
But I'll tell you what is killing me, the whole **** truck shakes when idling in drive and it is running rich as hell.
I fixed a bunch of vacuum leaks a few weeks ago and the truck was awesome. But then a few vacuum leaks returned. I re-adjusted the idle mixture and it does not seem to help, at least like it did previously. I was getting 22Hg vacuum and I am now around 18Hg. It sure points to another vacuum leak but I have not found it, yet.
I have not checked the EGR valve which is not hooked up, but, is it a possible source of a vacuum leak?
Second problem, running rich at idle. Not a little, a LOT and there is no way in hell I'll pass the emission test in the next couple of weeks...it's bad.
Along with the TFI upgrade, I have a Holley 300Z intake manifold and an Edelbrock 1406. I have recently replaced the plugs, wires, cap, rotor and coil (MSD Blaster). Last night, I chocked the wheels, started the motor and put it in drive. I then grounded each spark plug by piercing the plug boot at the distributor to see if any plugs were not firing. #3 did not seem to show a change in idle so I switch the #1 and #3 wires, #1 dropped idle speed dropped when grounded but #3 didn't. Common sense tells me that the #3 wire was not bad but it was not getting enough spark through the distributor. I am not sure if a distributor can halfway fail, I pulled the cap and rotor and it appears to be a magnetic pickup system. All of the pieces are intact although the star piece on the distributor was dirty/rusty.
Will a magnetic pickup be affected by the dirty contact area on the star mounted to the distributor shaft?
I am out of money for a while, but I am thinking that a new distributor may be good insurance. I am contemplating an MSD6 box but only if the benefit will show at idle. I will probably have to pull the intake and put new gaskets under it and check for cracks.
Believe me, I'm not looking for sympathy...on the other hand, if you have advice on the distributor or the MSD6 box ect. let me know.