Any thoughts on smoke?

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coldtaco

coldtaco

Joined
Jul 3, 2004
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Location
Anchorage, AK
Ok, I parked my 70 with 13B-T at the beginning of Oct. fo r a 8 day trip overseas. It was parked in a garage. When I got back, I noticed that it would smoke alot more under acceleration than it did before. EGT's and boost seem to still be the same. Before it would hardly smoke at all under similar conditions. What changed? Now it is hard to do any hard acceleration tests:) anymore since winter is here in full force and almost all the roads have ice/packed snow on them. I think the pumps are still using #2 diesel, so I don't think that is the problem.
 
Maybe you can now see the contrast of the smoke to the white snow. I know I notice my stinky Merc more when the virgin white snow is getting blacken by my exhaust.

Other than that, I second the diesel purge. Its a wonderful thing if some sort of crap is causing the problem.
 
Speaking of snow, my town got the highest snowfall dump this weekend. We got over 50cm's. But I think it was closer to 60 plus. The town was shut down. Just today I am trying to get snow tires. They are not legal till Nov 1 in BC, but everyone is now jumping to get them on. When I say snow tires I mean "studded".

hijack over.. :)
 
where do you get the Lubto Moly Diesel Purge??
 
I'm also curious about where to find the purge, as well as other good diesel additives.......thanks:beer:
 
Plug into a TDI club, or Merc club to find Lubro Moly products. Also, do you have a VW specific store there? Phone around and you should find a retailer there.

hth's

gb
 
I used seafoam for a purge. Used it in the same fashion as moly. Worked really well. Lots of gunk came out.

But doing a purge you need to follow procedures strictly or you could cause damage. You must use a return to the bottle. Or the gunk you just free'd up goes right back into the Injector pump.

Oh ya and a proper purge is not pouring this into your tank. The engine is run straight on the purge stuff.

scroll down in this link. http://dieselgiant.com/injectorcleaning.htm

the guy describes it well. I did this exact thing on my mercedes. for us with Cruisers make sure you add a cheap inline filter on before the crap gets to the Injection pump. Or you will re-circulate the carbon thru.

Also you must disconnect the return line and put it into this bottle. Or the crap returns to your tank, only to be sucked up again. Or in the case of a 3B direct into the IP again to be stuck in there...

I ran 2 litres thru and it took 10 mins in my Merc. Afterwards change the filter. On a merc it has an inline filter too prior to the IP.

Oh and just pouring it into the filter is not a proper purge. It might work, but all the loose stuff has to go back.

When I was done a half cup of sediment was on the bottom of the bottle and the inline filter was very dirty.

It cut my smoke down quite a bit. NO it is not a cure for not doing the injectors properly. But it does by some time and make it run nicer. IMOP
 
Oh seafoam can be bought at NAPA. 2 litres is plenty.
 
coldtaco said:
Back in Sept. I think I did a Seafoam cleaning direct to the fuel pump, bypassing the fuel tank.
Brownbear, I noticed the black smoke before we got the snow. I also use diesel fuel additive everytime I fuel.
Click to expand...

When was the injectors last done? My BJ seemed quite a bit better after the injectors for smoke under load.
 
brownbear said:
for us with Cruisers make sure you add a cheap inline filter on before the crap gets to the Injection pump. Or you will re-circulate the carbon thru.

Also you must disconnect the return line and put it into this bottle. Or the crap returns to your tank, only to be sucked up again. Or in the case of a 3B direct into the IP again to be stuck in there...
Click to expand...

Hi bb...

If you put the fuel supply line (the one going into the manual primer/fuel pump) and the fuel return line into the can, it still has to go through the stock filter before it gets to the injection pump. Not that a secondary in-line filter would not be of assistance...but your main filter is not bypassed.

Ohhh, I see...you are talking about the 3B, which returns a small amount of fuel direct to the injection pump, instead of direct to the fuel tank ala 13BT/12HT/1HZ/1HD-T. You returned this small line to the can then? Then, from the can, the fuel would still go through the fuel pump, up to the filter, then to the injection pump. Your injection pump "should" be safe. As you say, best to spin on a new filter after doing a purge like this.

Seafoam can be run straight from the can in a diesel then? Interesting. I had not paid much attention. I'll have to read up on it.

Thanks

gb
 
coldtaco said:
since winter is here in full force and almost all the roads have ice/packed snow on them.
Click to expand...

Brrrrrr....

Coming up to the shortest day of the year for you. How much light a day are you at right now? I really dislike this time of year even at 49° 02' North, and look forward to Dec 21st more and more every year! The typical rain/overcast/dull days have not arrived yet, so that helps!

Here we go...http://www.timeanddate.com/worldclock/city.html?n=81

Sorry for the jack...back to regular programing...

gb
 
Last edited:
Greg_B said:
Hi bb...

If you put the fuel supply line (the one going into the manual primer/fuel pump) and the fuel return line into the can, it still has to go through the stock filter before it gets to the injection pump. Not that a secondary in-line filter would not be of assistance...but your main filter is not bypassed.

Ohhh, I see...you are talking about the 3B, which returns a small amount of fuel direct to the injection pump, instead of direct to the fuel tank ala 13BT/12HT/1HZ/1HD-T. You returned this small line to the can then? Then, from the can, the fuel would still go through the fuel pump, up to the filter, then to the injection pump. Your injection pump "should" be safe. As you say, best to spin on a new filter after doing a purge like this.

Seafoam can be run straight from the can in a diesel then? Interesting. I had not paid much attention. I'll have to read up on it.

Thanks

gb
Click to expand...

Ah yes Greg the main filter does get it before the IP. But the hand primer will get the junk in the valves there is no inline is used(may or may not be an issue I dunno).

The return fuel from the injectors and pump will have a tonne of crap and bits in there. Probably carbon. It was pretty gross. Yes seafoam runs nicely in a diesel.

Lists it on the back of the can too.

I presume on the 3B you have to block the return inlet in the IP, or you will get too much air in and the engine won't idle. Where as a return line to to tank is easier put in the bottle.

I used a large juice bottle, drilled two holes and inserted hoses just like the pic in the link I shown above.

Now I have not done this purge on my 3B, only my Mercedes, which benifited quite well from it.
 
Cold Taco, maybe an injector is spraying incorrectly. Giving a incomplete combustion. Your boost is the same so its not like the air is the issue, same as the EGTs have not changed.
Ask Sheldon if he knows when they were done last.
 
I had the injectors tested by an injection shop and they were cracking within spec and had good pattern. No need to rebuild. That was about 3 years ago now.
 
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