Just bought a '98 E300 TD. Questions inside - Page 2 - PeachParts Mercedes-Benz Forum

kendogg · #16 07-02-2017, 07:34 PM

Quote:

Originally Posted by jake12tech

you did things the hard way for no reason. everyone around here will tell you penetrating oil and a ratchet and hope for the best. the way that has a 100% guarantee is using an impact gun between 30-40 psi with a fully heated up engine and they will come out (all 6) within 45 minutes. i've done it 3 times and walked a member through the process who vouches for my technique.

The glow plug was already broken when I was asked to assist. Don't make assumptions

EDBSO · #17 07-02-2017, 08:20 PM

Quote:

Originally Posted by kendogg

Do I need to pull the intake to get to all of the plastic fuel lines? If so, then ya I'll definitely just do the glowplugs while I'm there. I'm very familiar with how to do them. Had one break off in a friends and it took a long drill bit and a slide hammer moving the entire car to get it out.

Thinking of the intake manifold....the entire drivers side of the engine and intake piping is covered with oil & nastyness. I presume this is coming from the EGR or some other way out of the intake? I assume this is common, so maybe somebody can point me in the right direction there?

A trick I use and highly recommend is to fill the fuel tank to the top, my drive slopes down so I start with the car level in the garage and after replacing the fuel filter and/or fuel lines I roll it down the driveway and start with the nose down and tank high. Yes have a fully charged battery.

The intake manifold comes off and goes on real easy and the gasket is cheap, you will not believe the gunk built up in there.

Heard more bad than good things about having the car remapped, usually causes some driving anomalies or quirks if you prefer.

kendogg · #18 07-02-2017, 09:44 PM

Quote:

Originally Posted by EDBSO

Heard more bad than good things about having the car remapped, usually causes some driving anomalies or quirks if you prefer.

Such as? Links? A tune is usually one of the first things I do to a new (to me) car. While factory tunes on newer vehicles have gotten quite good on modern cars with full widebands stock etc., the OE still has to make compromises that aren't always ideal for best running conditions. Doesn't help, I suppose, that my best friend is one of the best BMW tuners in the country, and a majority of the past god knows how many cars I've had have been BMW's....

That, and I'm just not a fan of 'fixes' that fool the ECU. Garbage in, garbage out is never a good way to go, so if there's a way to fix the issue in the software itself, thats always better.

shertex · #19 07-02-2017, 10:44 PM

Happy with my Rocketchip tune on my 98. Stage 2 gave me marked (though not dramatic) improvement. I was hoping for fuel economy improvement but didn't see any.

kendogg · #20 07-02-2017, 11:27 PM

Quote:

Originally Posted by shertex

Happy with my Rocketchip tune on my 98. Stage 2 gave me marked (though not dramatic) improvement. I was hoping for fuel economy improvement but didn't see any.

Part-throttle drivability any better, or WOT only?

Murkybenz · #21 07-03-2017, 06:37 AM

Change all the o rings on pipes and then connect a pela pump or similar to the return line connection out off the main fuel filter ,put ignition on to open stop solenoid and then apply vacuum and all the lines will get bled.

shertex · #22 07-03-2017, 06:48 AM

Quote:

Originally Posted by kendogg

Part-throttle drivability any better, or WOT only?

Quicker, more responsive all the way around....turbo lag all but gone.

kendogg · #23 07-03-2017, 10:51 AM

Quote:

Originally Posted by shertex

Quicker, more responsive all the way around....turbo lag all but gone.

Thats what I like to hear, thanks! I'll shoot them an email.

EDBSO · #24 07-03-2017, 08:25 PM

Quote:

Originally Posted by kendogg

Such as? Links? A tune is usually one of the first things I do to a new (to me) car. While factory tunes on newer vehicles have gotten quite good on modern cars with full widebands stock etc., the OE still has to make compromises that aren't always ideal for best running conditions. Doesn't help, I suppose, that my best friend is one of the best BMW tuners in the country, and a majority of the past god knows how many cars I've had have been BMW's....

That, and I'm just not a fan of 'fixes' that fool the ECU. Garbage in, garbage out is never a good way to go, so if there's a way to fix the issue in the software itself, thats always better.

usually drive-ability problems, stumbling, surging, rough and excessive rolling coal at part throttle.

Could be wrong but I recall that Shertex had a re-tune touch-up on his original tune. I could be wrong though.

I have read on other cars when deciphered the tune simply went full rich sooner and more often.

I would agree that a proper tune (perhaps available from your friend0 can work wonders BUT they are few and far between.

PS There are real limits as to how much the injectors can flow.

shertex · #25 07-03-2017, 09:59 PM

Quote:

Originally Posted by EDBSO

usually drive-ability problems, stumbling, surging, rough and excessive rolling coal at part throttle.

Could be wrong but I recall that Shertex had a re-tune touch-up on his original tune. I could be wrong though.

I have read on other cars when deciphered the tune simply went full rich sooner and more often.

I would agree that a proper tune (perhaps available from your friend0 can work wonders BUT they are few and far between.

PS There are real limits as to how much the injectors can flow.

No, that's incorrect. The tune was perfect from Day 1.

EDBSO · #26 07-03-2017, 10:41 PM

Apologies, must have been someone else, I wasn't certain.

Would you spend the money again?

kendogg · #27 07-03-2017, 11:28 PM

Quote:

Originally Posted by EDBSO

usually drive-ability problems, stumbling, surging, rough and excessive rolling coal at part throttle.

Could be wrong but I recall that Shertex had a re-tune touch-up on his original tune. I could be wrong though.

I have read on other cars when deciphered the tune simply went full rich sooner and more often.

I would agree that a proper tune (perhaps available from your friend0 can work wonders BUT they are few and far between.

PS There are real limits as to how much the injectors can flow.

No offense, but I've dealt with quite few professional calibrators - yes, there are ****ty tuners out there, lots of them., But a quality tune is worth every penny, on most cars. You can stop the fear mongering now. Your post is nothing but that - not a single bit of first-hand knowledge, only fear.

kendogg · #28 07-03-2017, 11:35 PM

So, to recap - thus far, we've confirmed the following:

There is a nice set of o-rings I should buy when doing the fuel system service.
1 can of diesel purge is plenty
There ARE ECU flash tuners available, but no confirmation thus far on if they delete emissions components from the software or not. And there is a resistor mod to fool the ECU if I wanted go to that route.
Pull the intake, clean it, and replace all of the glow plugs when I replace the plastic fuel lines & orings.

Am I missing anything?

shertex · #29 07-04-2017, 08:19 AM

Quote:

Originally Posted by kendogg

So, to recap - thus far, we've confirmed the following:

There is a nice set of o-rings I should buy when doing the fuel system service.
1 can of diesel purge is plenty
There ARE ECU flash tuners available, but no confirmation thus far on if they delete emissions components from the software or not. And there is a resistor mod to fool the ECU if I wanted go to that route.
Pull the intake, clean it, and replace all of the glow plugs when I replace the plastic fuel lines & orings.

Am I missing anything?

There are definitely tuners out there will be delete EGR for you (for off-road testing purposes, of course).