udate need help

[tyfoo]

ok this is the up date on my promblems

I just did a lower intake gasket today
and put new injectors in
changed the plugs too

so far changed

o2
iac
tps
tested the egr - ok
cap
rotor
wires
turned waste gate down to stop over boost
top end cleaner
all intake seals
throttle body seals
pvc valves
compression test - ok

the stall when putting in gear is gone
the popping in the exhaust is there once in a while at idle
the top end is better but here alittle knock just before it shifts when getting on it

but it still has a rough idle, breacks up to 1500 rpm
even when driving

need help
any ideals? on what to do

 

[gmcturbo]

the popping in my exhaust went away when i switched from cr42ts' to ngk ur6's along with cap and rotor and taylor wires. before i did that i had replaced all the parts within 3 months just at different times about a month apart. i just went through all this stuff you are last year when i first got the truck. so ya just RE-check ignition stuff and be sure to use dielectric grease in all your spark wire connections. you didnt mention if you checked the timing and the "TDC check". hth

edit- also i messed with the idle bleed adjustment on the TB help with shifting into gears (and not stalling). check your IAC counts and hoses again to rule out a vaccume leak. might want to check fuel pressure and volume while you're at it just so you know everything is where its supposed to be. this is what i had to do and i finially got it running great!

 

[Raist103]

idle = vac lines most times

or try diff plugs again and diff gaps some like 25 most like 32 and some like up to 36

 

[tyfoo]

i checked tdc
and im useing the ur5's there gaped at 030

whats the idle screw on the tb
its idleing about 800

can i change the timing ?
will this efect any thing if i boost it up a degree?

I havent change the black box on the distributer
would that cause my promblems?

i'm going to change the cap and rotor again this weekend
thanks

 

[Raist103]

sometimes the wires on the rotor get stuck under the cap and cause the bad idle and miss at wot...check for kinks...