Recent content by 89sportside

  1. 89sportside

    Here's one for the experimenters and GM philosophers

    Of course, it's possible that low fuel pressure could cause it to run lean, which creates stumble when exhaust gas is introduced, and causes detonation when exhaust gas isn't available?
  2. 89sportside

    Here's one for the experimenters and GM philosophers

    Injector spray pattern is pretty normal, no dribble and keeps a steady pattern throughout throttle range. I checked it with a timing light on my distributor wire. Fuel pressure appears to be okay but I haven't checked because NAPA wants a 150 deposit for me to rent a gauge. When the EGR...
  3. 89sportside

    Here's one for the experimenters and GM philosophers

    Okay so! I'm having an issue with my 1989 K1500 350. A few weeks ago I was getting rich fuel, no start (flooding) problems. I did some tweaking and got that fixed, and after that the off-idle stumble surfaced. After some more tweaking I found that plugging the vacuum hose at the EGR valve...
  4. 89sportside

    Fouling spark plugs

    I think you're right on the money, leakers. My timing was way screwed up and fixing that along with replacing the Coolant Temperature Sensor made a YUGE improvement. However I'm still having a power issue at low rpm, along with a funny chugging sound when under a load and an erratic idle, which...
  5. 89sportside

    Fouling spark plugs

    Well, last night I got it to run long enough to put the timing light on it, was firing way before TDC. So I got that fixed but I haven't test drove it yet. Also, I thought code 15 was the thermostat but it turns out it could be a number of things, so I assumed it was the Coolant Temp sensor and...
  6. 89sportside

    Fouling spark plugs

    Well, I did a full tune-up and replaced my rotor, cap, wires, and plugs. I'm pretty confident none of my brand new wires are shorting. And I did double check all of it since the problems started worsening. Today I can get a start without even holding the pedal to the floor, and whatI'm noticing...
  7. 89sportside

    Fouling spark plugs

    I'm expecting my new thermostat to show up Monday, so I'll be sure to mention how that goes. I have read about the thermostat being open causing a richer fuel mix, but it does hard start after sitting. When I coax it into running, it backfires and runs rough when idling and even more when under...
  8. 89sportside

    Fouling spark plugs

    Well, here's the thing. Somebody was working on it the night before, and maybe they forgot to tighten the lugnuts all the way on when they were done. And maybe that somebody lost a wheel right in front of the shop , and when the drum hit the ground a lot of their brake parts went tumbling out...
  9. 89sportside

    Fouling spark plugs

    Yeah, that's about how I feel typing it. Apparently, they were having trouble starting it and called me saying they flooded the engine (yes, they flooded a TBI, you read that right too), so they spent two hours pulling the spark plugs to dry them off. But don't worry, they were only going to...
  10. 89sportside

    Fouling spark plugs

    Hey guys, been a longtime lurker, this is my first post. Tonight after I get a photo I'll post on the new member board. My 1989 Chevy K1500 5.7l 350 has been running great for 276000 miles now, but a couple of weeks ago I made the grave mistake of dropping it off with a shop for a brake...
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