Mudbath
Old Smoky
History of my vehicle
Always had hard to start when cold, would start run like crap for a few seconds and smoke like a SOB then something would change and instantly run smooth and clear up the smoke (blue smoke) Then would start like a champ after that as long as it had run for a bit.
PO had it into GM many times and it never was properly resolved, I have had it for 4 years now and have done the following ... Heath tune, Heath lift pump, Heath TM, Engine coolant sensor (in Thermostat housing crossover) Heath PMD kit, TDCO offset was @ -1.94 and recently drop it down with Engh's GMTDScan Tech to -1.75
Now I just did the HG on this truck and while doing that I replace the CPS as it looked original and was in rough shape. Did OPS while I was at it too (not relevant to this)
After running it a couple days I am getting even harder starts than before with more smoke, once warmed up much better. It is setting a code 34 DTC and engine light will come on and go out. So I warmed it up and thought I would recheck the timing and when checking DTC there is the code 88 which clears then comes back when rechecked.
I tried to do the Timing Set and Learn but both cause engine to stall. (TDCO shows as 0 and once got it to go to something else which was the undesired -2.02 setting the code 88) The Desire and Actual are sitting at 11.7 (use to be lower but can't remember number, 8.5???) which confused me because I never changed the IP position. While doing the HG job I also replaced the water pump and check the chain by moving the crank and watching the camshaft and IP gears, things were tight there. I am starting to think that PO had TDCO set when the CPS was bad and now that it is new I am getting timing problems OR I have a flaky CPS (Standard)
Got any Ideas for me? Do you think I will have to turn the IP a bit to get that 11.7 down? Which way and what is a good base timing to aim for if this is what has to be done.
Hopefully Buddy the timing Guru is listening!
Always had hard to start when cold, would start run like crap for a few seconds and smoke like a SOB then something would change and instantly run smooth and clear up the smoke (blue smoke) Then would start like a champ after that as long as it had run for a bit.
PO had it into GM many times and it never was properly resolved, I have had it for 4 years now and have done the following ... Heath tune, Heath lift pump, Heath TM, Engine coolant sensor (in Thermostat housing crossover) Heath PMD kit, TDCO offset was @ -1.94 and recently drop it down with Engh's GMTDScan Tech to -1.75
Now I just did the HG on this truck and while doing that I replace the CPS as it looked original and was in rough shape. Did OPS while I was at it too (not relevant to this)
After running it a couple days I am getting even harder starts than before with more smoke, once warmed up much better. It is setting a code 34 DTC and engine light will come on and go out. So I warmed it up and thought I would recheck the timing and when checking DTC there is the code 88 which clears then comes back when rechecked.
I tried to do the Timing Set and Learn but both cause engine to stall. (TDCO shows as 0 and once got it to go to something else which was the undesired -2.02 setting the code 88) The Desire and Actual are sitting at 11.7 (use to be lower but can't remember number, 8.5???) which confused me because I never changed the IP position. While doing the HG job I also replaced the water pump and check the chain by moving the crank and watching the camshaft and IP gears, things were tight there. I am starting to think that PO had TDCO set when the CPS was bad and now that it is new I am getting timing problems OR I have a flaky CPS (Standard)
Got any Ideas for me? Do you think I will have to turn the IP a bit to get that 11.7 down? Which way and what is a good base timing to aim for if this is what has to be done.
Hopefully Buddy the timing Guru is listening!
