D13 volvo fuel leak

Three of the last 4 times I've started and drove my truck I noticed the smell of diesel burning and smoke coming into cab through vents. Two times I remember I didn't let the engine warm really much, just started let it build air and went on my way.

When the smoke has come through the vents into cab I also had smoke kind of bellowing under hood. But when I raise the hood I cannot for the life of me see where the fuel is coming from. Then it just stops.

My theory is there must be a bad seal somewhere that after it gets pretty warmed up must seal properly but until then it just leaks just enough fuel on warming up parts to make you worry it's going to catch fire.

Any ideas?

 

It may be coming from somewhere at the rear of valve cover by firewall. I had a shop replace rear motor mounts and steer axle shocks they said they sprayed a little diesel to losen some bolts thought maybe I burned it off. Either way can't see anywhere its wet with diesel.

 

Thank you, I will try this. I know they were loose before. They'd been tightened by a shop since but might have come loose again.

 

I was thinking the same thing, leak somewhere on passenger side. I did notice once that when it did it, the underside of the. I think it's exhaust bellows pipe right behind the header or s pipe off the back of the turbo looked a little wet. I checked it yesterday after getting my oil changed and it wasn't wet. So I think it may be somewhere on passenger side and hitting that pipe. Just weird how it'll smoke a couple minutes and then just stop.

 

You know I got to looking at my flex pipe and stuff and realized it's sitting on the frame rail. It wasn't before. And I just had my motor mounts at the rear replaced and starting to wonder if they tweaked something when they did it and created an exhaust leak. Never had this issue until after that. But I'll also check that 7th injector.