shackwrrr

did some fuel screw adjustments yesterday(1 turn total), got the idle back down to 750 and all is well. Today when I was testing the alternator I noticed I was able to rev the engine higher. On the factory Rachel I took it to 3100 before I let off, no signs of refueling. The pump was completely stock when I got the truck, I turned the pin to the deepest side of cone, took some clicks out of the star wheel, and turned the smoke screw in 2 turns. Before I messed with anything I could only hit 2500 rpm, driving or free rev didn't matter.

So why such a high rpm without governor spring?

j_martin

Pucker up, you're kissing runaway. I'd back off the fuel screw a tad.

shackwrrr

Weird, doesn't feel like it... If I stab it hard it doesn't hang and it drives fine. No smoke or even haze at WOT. Ill turn it back a Tad and give it a shot.

shackwrrr

Dropped it a half turn and it still lets me go higher than 3k.

dieselJon

I have a stock gov spring, stock tires, 3.54. BEfore the injectors, I could top out at 90-92mph. Now I can go way past 100mph. You are fueling hard than the gov can overcome.

A runaway is when the fuel collar never gets pulled back to open the spill port. I theorize, since this seems like a pre-IC (including VW's, around 90-92) issue, that they have a different fulcrum lever. This seems like it is allowed to over center and the gov spring is unable to get enough tension to pull it back. VW's had a problem with runaways before the time I noted but after, you don't hear of too many runaways.

shackwrrr

What is recommended so that I can overcome this situation? My goals are to make around 300hp in the end but I am working up in steps. Right now I have a 4" turbo back. Next step is the BHAF.

An intercooler is on my list but I am going air to water and im putting it on the turbo side of the engine bay. Once I get all the supporting stuff figured out I'll need more fuel, I think the fuel injectors should be fine since they are non intercooled.