1HDT - ACSD leaking fuel

[finderscuba]

I had a good look at my ACSD today. After starting the engine cold, there was a steady stream of fuel pouring out from just under the ACSD (hard to see exactly where it was coming from). When I put a screwdriver in and turned the ACSD lever ccw, the leak stopped. When I released the lever, it would start leaking again. It seemed to slow down and stop leaking once the engine warmed up.

So this would explain why I smell a strong diesel smell from the front left of the truck in recent weeks.

One thing I don't understand is what the ACSD actually does. When I manually turn the lever, there is no difference in how the engine runs. Cold or hot, the lever appears to be in the same position - which indicates that the thermowax is toast. I'm going to take it off permanently just the same.

Looks like I'll be shopping for a blanking plate, oring and hose union.

 

[Radd Cruisers]

Blanking plates... the ACSD is a liability you might want to get rid of. Blanking plate and seal will run about $25. Not removing the ACSD, about $2500 + labour.

I am for removing the ACSD.

~John

 

[rick_d]

I'm with John. Blanking plates can be found used with same bolt spacing for most bosch pumps and the o ring is a common size.

One of the feed cooler lines can be used for the bypass-

Then throw the ACSD in the nearest trash bin

 

[gifu]

this may be obvious advice... but don't overtighten the bolts holding the blocking plate as the case of the IP is aluminum (or at least that part is).

 

[Enigma]

My pump was spewing fuel quite badly recently, whether it was just from the ACSD or not I don't know. I decided to get the whole unit resealed (with the new Viton type, or whatever they are called) and change out some of the fuel lines so I could run veggie fuel if I felt like it.
The whole procedure nailed me for $1400 (with taxes).

 

[roscoFJ73]

My pump was spewing fuel quite badly recently, whether it was just from the ACSD or not I don't know. I decided to get the whole unit resealed (with the new Viton type, or whatever they are called) and change out some of the fuel lines so I could run veggie fuel if I felt like it.
The whole procedure nailed me for $1400 (with taxes).

Wise move. You will usually find once one seal starts leaking ,the others are not far behind.

 

[Enigma]

By the mess in the driveway, I think they all went at once