New Noozles! - PeachParts Mercedes-Benz Forum

brer · #1 08-30-2006, 02:08 AM

I also got a hell of a tick to go with it.
From what i've read I'm hoping its the Bosios breaking in, but MAN is it a tap. Once she's warmed it can come and go but if I hadn't read otherwise I'd be afraid a rod was going.

I'll give it a few hundred miles.... but I am going to pull the valve cover and make sure a rocker stand isn't loose or something.

Freeway driving is smoooth with some smoke cloud on heavy acceleration.
Overall engine performance has definitely improved, just need to get that hammer out of the valve cover.

Endust · #2 08-30-2006, 10:16 AM

All the bosio nozzles I put in nailed for the first few hundred miles. At first it was all the time, then it was only when cold, then it stopped completely. As long as you didnt fudge anything up installing them it will prolly go away.

brer · #3 08-30-2006, 06:34 PM

it was so straightforward.. but i still managed to mis step a little.

all injector rebuilds went fine, except for one. I ended up putting the air wrench on it. Well, it took a good minute at 250lbs. to break the the thing loose. I had tried just the vice and breaker bar but there was NO way it was coming apart. It did finally and it looked like there was some sort of glue on the threads. German nozzle like all the others.

Thats not the one that is nailing though. ??????

cylinder 4, which is also the one that nailed only occasionally with the original nozzles. Now its a constant hammer when cold, and intermittant when warm.

still going to check my valves this weekend.
I might buy a set of crush washers and move that injector while i'm at it.

Question, can the injector be damaged by running it without the crush washer? Just in the head with no washer? I started it and let it warm up before I found the washer I hadn't installed, shut it down and put it into cylinder 4.

more later,
b.

pawoSD · #4 08-30-2006, 07:05 PM

Yes the bosio's will run rough/nail for 400-600 miles, then they become extremely smooth, same thing happened on our '83. Had all the injectors rebuilt/balanced/pop tested with bosios, 500 miles later, it was running amazing.

Endust · #5 08-30-2006, 08:09 PM

Running for a bit with no shields wouldnt have killed anything. Just dont run down the road like that. Sends carbon up the sides of the nozzle and gums things up. Also lets the nozzle end get too hot. I would let your nailer go for a bit before you tear into it again.

brer · #6 09-04-2006, 03:48 AM

update, took it out for a 2 hour drive today.
long uphill pull into the desert. When we arrived at the parking area for our hike I check the engine, still knocking, and found the #4 injector with diesel fuel collected around the seam of the two injector halves. I think its got a leak from being put back together. Top connector for #5 injector has a spot of fuel coming from the connection. So tomorrow i'm pulling them and making it right i hope.

More important events happened later, Kelly was driving the benz and it appeas the IP linkage moved and lodge itself under the fuel hardlines while she was on the freeway. No accident but it was out of control for minute while she figured to put it in Neutral and pull off. She is fine, car is fine.

brer · #7 09-04-2006, 10:30 PM

it was the clip that keep the IP arm in place, little round cir clip.
Went to the pick a part and got two! for free.

Quite a few sets of alloys hanging around, but kelly prefers the hubcaps.

Pulled the dodgy injector and cleaned again, only this time I took a nylon emory pad to the inside of the injector body and the seating surface of the (insert name of injector part here) where it contacts the injector body. Carbon came off, oiled it, torqued it and installed.

No more knock.
dare I say... knock free?