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EGR Removal

Getting the best performance from your Isuzu, the in's and out's

EGR Removal

Postby muzila » Sat Aug 14, 2010 10:49 am

This is for a 2.8, 5 speed manual 4JB1-T Isuzu MU.
I cannot confirm if the 3.1's or the auto's are the same. Also if you have an intercooler it could be slightly differant. Someone here will know.

The first step is to get the plates and new bolts to block the holes left after removal of the EGR valves and the studs.

Next step is to remove the EGR valves and the exhaust return pipe running across the top of the motor at the rear.
Image01.JPG



Remove the studs as well if they havn't already come out.

Use high temp exhaust sealer and bolt the exhaust plate over the hole left from the pipe.

Image02.jpg


Also use a sealer when placing the plates over the holes left by the EGR valves.

Image03.jpg


Once all that is done you can start to remove the small vac hoses being careful not to damage them as some of it will be used in the next step.

You need to run a length of vac hose from the fuel pump

Image04.jpg


to here.

Image05.jpg


Last thing to do is block the small vac hose off the back of the altinator and its done.

Image06.jpg


If you like you can remove all the valves and mounting brackets in the corner of the engine bay. You can just leave the plugs there or push them back through the grommet in the firewall.

Image07.jpg


Hope this helps someone.

.
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Last edited by muzila on Sun Aug 29, 2010 1:24 pm, edited 5 times in total.
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Re: EGR Removal

Postby Captcol » Sat Aug 14, 2010 11:45 am

Awesome cheers, I think the auto must have some extra piping in there, and I probably would have missed the fuel pump one so good work that man
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Re: EGR Removal

Postby turnturn » Sat Aug 14, 2010 1:42 pm

have you left the "fast idle" mechanism for the air conditioning working?
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Re: EGR Removal

Postby Caboolture » Sat Aug 14, 2010 1:55 pm

Very nice Where do you get egr blanks? Cheers Peter
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Re: EGR Removal

Postby muzila » Sat Aug 14, 2010 7:26 pm

Turnturn: No I removed that as well. I no longer have air conditioning in my MU I use the air con pump as an air compressor. It makes very little diffearance when driving and I just use the idle control when sitting still.
Last edited by muzila on Sat Aug 21, 2010 2:48 pm, edited 1 time in total.
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Re: EGR Removal

Postby muzila » Sat Aug 14, 2010 7:28 pm

Caboolture wrote:Very nice Where do you get egr blanks? Cheers Peter


Made them my self. I have 2 sets left if anyone wants some. They not as fancy as some on here but they work a treat.

viewtopic.php?f=19&t=953
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Re: EGR Removal

Postby muzila » Sun Aug 29, 2010 1:25 pm

Think I finally got the pictures working again.
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Re: EGR Removal

Postby rcolijn » Sun Aug 29, 2010 9:58 pm

THanks mate, exactly what I needed. Just one question, whats the purpose of removing them all?

Do you gain power, and if so, does that cost in economy?
Also, is there anything which needs to be adjusted after removal, like re-tune or something?

Thanks again, great stuff!
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Re: EGR Removal

Postby muzila » Mon Aug 30, 2010 4:59 pm

I don't think you gain any extra power from removing the EGR valves. I could be wrong. I got rid of them for the room to put my second battery there.

I never needed to re-tune anything once they where gone.

And I also don't have to look at those silly tiny hoses. :)
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Re: EGR Removal

Postby geeves » Mon Aug 30, 2010 5:18 pm

If EGR is working properly it shuts off at full throttle
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: EGR Removal

Postby rcolijn » Mon Aug 30, 2010 9:03 pm

Thanks guys, I would like an extra battery so that kight be a good reason to do it. Will have a think about it. Good stuff, this forum always helpes me out!!!
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Re: EGR Removal

Postby muzila » Tue Aug 31, 2010 7:46 pm

Just in case anyone wants it I did a PDF file finally of the EGR removal. It is the same as the one here.
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Re: EGR Removal

Postby MattWest » Sun Oct 17, 2010 3:35 pm

I have a 95 auto, 3.1, with working aircon. From what I can see the 2 vac lines from the egr valves head to some electrics by the booster. I want to keep anything to do with the aircon working - ie fast idle. In this case what do I do with my vac lines? follow the above pics? or is there some thing else I need to do?

I will get pics up of the solenoids etc, but can I remove all of these? what do you do with the lines that run to other places, just block them up?

Cheers, hope that all makes sense
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Re: EGR Removal

Postby Captcol » Mon Oct 18, 2010 3:49 am

From what I understand those two solenoids can be removed, I have just blocked the line coming to the solenoids as I haven't had time to trace it back yet. Which reminds me I need to fix the fast idle, it works it just doesn't touch the throttle so jumps in and out without affecting anythings
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Re: EGR Removal

Postby MattWest » Mon Oct 18, 2010 5:07 pm

So, Ive just changed the cam belt in the Mu, and removed the EGR valves and now have some issues.

Ive set up the vac lines as above (hoping this is the same for the 3.1) and now wont idle and is running rough as guts. Im trying to figure out if this is something to do with the vac lines and egr, or Ive go issues with cambelt and timing etc.

Any suggestions/comment would be helpful.
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Re: EGR Removal

Postby geeves » Mon Oct 18, 2010 5:24 pm

double check timing
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: EGR Removal

Postby MattWest » Mon Oct 18, 2010 5:42 pm

geeves wrote:double check timing



Yes, will do. (dammit)

Set the vac hoses up as per pic in the thread below, and no luck. def must be timing.....back to work!
viewtopic.php?f=23&t=826&start=0&hilit=3+1+egr
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Re: EGR Removal

Postby MattWest » Tue Oct 19, 2010 5:32 pm

so.. Ive hunted and hunted to find some infor on how to line up the marks on the injector pump gear and also cam gear with no luck. Can anybody point me in the right direction? Have No.1 at tdc but marks dont make sense at the mo.

Cheers
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Re: EGR Removal

Postby pig75 » Tue Oct 19, 2010 6:19 pm

It's all in the FAQ section
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Re: EGR Removal

Postby isumu » Mon Nov 29, 2010 10:31 am

Hi All

So to keep air-con running as usual, what exactly are the extra steps I need to do (if any)?
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