getting her to run right

[atomicmecha]

Following the advice of many of you, I've opted to try and get my typhoon running as best as possible BEFORE i tackle swapping the heads and other stuff. That way I'm working from a good spot. Or by working towards a correctly running truck I may find aspects that need attention that I didnt think of before. Anyway...

So after patching up the vac system a bit so it no longer leaks (or so I'm hoping atm) and some fresh fuel, plus just putting everything back in place. She'll start up and run with no real issue. Still has that smoke on start which then goes away till the next time. The issue is driving and off idle rpm's. It feels like she's not quite all there and it also feels like there are some flat spots.

I got datamaster working again (WOOTWOOT!) and did a log last week of a quick drive to go pick my gf up from work and back. Cant attach files, so here's the link to it in my dropbox https://www.dropbox.com/s/yx80uul9f4hj993/2014-07-21.uni

So I'm wondering if anything jumps out at anyone in the log. I feel like my spark advance is wayyyy to high. Also she seems to be running slightly lean. Normally the AF gauge is dead on 14.7 but lately she's been struggling to keep below 15.

Where should I start in terms of getting everything right? What sensors should I tackle first? IAC? MAF? I gave it a tune up last Aug and only ~2000 miles ago.


Thanks! :tup:

 

[The Dread Pirate Fisher]

Re: getting her to run right

For one, you don't have a MAF sensor. Lol

Start by checking your timing.
When was the last time you changed or looked at your spark plugs?
Gapped correctly too?
Plug wires, check them all.
Cap and rotor, check the terminals for corrosion, replace if needed
Changed the fuel filter? Do you have an AFPR? What's the fuel pressure with the vacuum off?
What's the vacuum at idle? 16 or more? Aftermarket boost gauge?

Start there, that should get you going

that puff at start up cold be oil blow by, or coolant. Check the oil to make sure it's not a milkshake color.
Once you've done all that, report back your findings

 

[atomicmecha]

Re: getting her to run right

For one, you don't have a MAF sensor. Lol

Start by checking your timing.
When was the last time you changed or looked at your spark plugs?
Gapped correctly too?
Plug wires, check them all.
Cap and rotor, check the terminals for corrosion, replace if needed
Changed the fuel filter? Do you have an AFPR? What's the fuel pressure with the vacuum off?
What's the vacuum at idle? 16 or more? Aftermarket boost gauge?

Start there, that should get you going

that puff at start up cold be oil blow by, or coolant. Check the oil to make sure it's not a milkshake color.
Once you've done all that, report back your findings

I'll check the timing this weekend. I knew I was forgetting to check something. :roll:

And i changed the plugs back in september but i've only driven the truck about 2000-3000 miles since. And I made sure to gap them all at 0.35. Also put a new cap, rotor, and wires on when I did the plugs.

Fuel filter was supposedly replaced before I brought the truck, but given everything else I've found so far, thats probably a lie. I'll get a new one and put it in. And atm it still has the stock FPR. I can check the fuel pressure this weekend when I do the timing.

And I cant remember the exact number the gauge sits on atm, I'll have to go start the truck up later and see. But its an aftermarket gauge. I know its in the -15 to -18 range. And once I fixed the vac lines the needle stopped twitching and now sets solid when idling.



As for the blowby, Yeah, I know what it is and its why I have a new set of vortecs waiting to go on. Oil looks fine. Coolant is old and is getting flushed in one of the up coming weekends. Nether look contaminated by the other.