98 blazer rough idle
Hello,
Any upload the images of the results so I will post them instead....
START UP. IDLE. H RPM.. 2500RPM
COLD
FTLT B1 7.03%. 7.03,%. 7.03%. - 7.03%
FTST B1. 0%. 3.12%. - 0.78%. - 0.78%
FTLT B2. 1.56%. 1.56%. 1.56%. - 8.59%
FTST B2. 0%. 3.91%. 0%. -9.38%
Any upload the images of the results so I will post them instead....
START UP. IDLE. H RPM.. 2500RPM
COLD
FTLT B1 7.03%. 7.03,%. 7.03%. - 7.03%
FTST B1. 0%. 3.12%. - 0.78%. - 0.78%
FTLT B2. 1.56%. 1.56%. 1.56%. - 8.59%
FTST B2. 0%. 3.91%. 0%. -9.38%
George
I changed EGR valve, Maf, IAT
Made sure air intake was sealed along with pipe that goes to valve cover
Have you done the lower intake, manifold gaskets yet?
also, if we’re going to start getting in the misfire detection, you’re gonna need to make sure your CMP retard is within spec.
George
Ok, the car still runs good for a minute or so from cold before running rich.
What android app can I use to check cam retard?
Back history for the truck,
Cylinder heads changed for new 1 year ago
New intake gaskets
Ran great to start with but slowly deteriorated.
It would alway spluttering on acceleration after deceleration and braking.
What android app can I use to check cam retard?
Back history for the truck,
Cylinder heads changed for new 1 year ago
New intake gaskets
Ran great to start with but slowly deteriorated.
It would alway spluttering on acceleration after deceleration and braking.
George
Last edited by GeorgeLG; Nov 11, 2024 at 02:29 PM.
The spark plugs are clean but just assuming its rich as smells like raw fuel out of the tail pipe with black and sooty around the tip of the exhuast too.



