governor problem?

[fabricator]

Oh it's hot, I put a 205 degree thermostat in it, cylinder temp runs around 180 head temp runs around 208-209, the exhaust manifold flange runs about 225-230, when I lowered the idle speed, I raised the alternator voltage, when I get it warmed up and kick in the alternator it lugs down quite a bit, it's working.

[dieselgman]

Spare fuel pump and injector on the way... (just in case).

dieselgman

[fabricator]

Thanks Gary, DES , the only way to fly man.

[playdiesel]

My plunger is a tight fit in the barrel, when it is pushed into the barrel it will not drop out on its own it has to be pushed out.

That may very well be the problem. I should not be snug like that.

[LincTex]

Spare fuel pump and injector on the way... (just in case).

I am in the market for your old ones, to have for spare parts.

[dieselgman]

Linc, you may want to look into getting spare rebuild pieces if you are short on cash. The nozzle for the injector, and the element and delivery valve for the pump is available and fairly easy to install.

dieselgman

[fabricator]

Gary, Et al, the new pump and injector showed up yesterday, unfortunately I had a catastrophic failure on the fuel tank, it split at the seam, so I made a new one out of 16 ga stainless
Next I installed the new pump and the injector and it's been running steady as a rock for the last two hours, so, we shall see.
Thanks Gary, your patience and help is much appreciated, I'll put the old pump right back in your box and send it back asap.

[dieselgman]

My pleasure... Let's hope this takes care of the problem! 

dieselgman

[fabricator]

One thing that has me wondering, when I took the old injector out the whole tip was covered with carbon, since I've derated this thing, down to about 625 rpms I'm wondering if I should lower the injector pressure.

[dieselgman]

The 6/1 and the 8/1 use the same nozzle and injector pressures - you should be setup just fine as is.

dieselgman

[fabricator]

Cool, one thing to check off the list.

[fabricator]

Well it's been over 24 hours and it's still smooth as glass.

[dieselgman]

Well, we are glad to hear of your success! Most likely a sticky pump element or something along those lines. I'll check-out your old pump when it arrives here.

As far as 'de-rating' is concerned though, it will be valve timing that changes quite a bit. Something on the order of 20 crankshaft degrees difference on the exhaust valve from 8/1 to 6/1 specifications for the change from 850 to 650 rpms.

Best Regards,

dieselgman

[fabricator]

Well, at this time tomorrow it will have been running for an entire week without a shutdown, the rpms only vary slightly now, I'm gonna shut down on Sunday and see what the injector tip looks like. Might even give it an oil change because it's been behaving.