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Little Toe Guest
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Posted: Thu Dec 27, 2007 8:47 pm Post subject: Mysterious tappeting noise from my engine
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As some of you may have read on my other post - http://forum.difflock.com/viewtopic.php?t=18898
I've been searching for a mysterious tappetting noise coming from the 1300cc engine in Little Toe.
Culprits were
1. a rocker arm
2. a stick/bent valve
3. fuel pump,
4. distributor
5. cracked exhaust manifold
6. a little end bearing on a con-rod.
So having checked the valve train and tappets, replaced the fuel pump, examined the distributor I moved onto No.5.
Took the exhaust manifold off and low and behold - a hair line fracture in the casting...
Cleaned off the baked on mud...
Close up of the crack...
Cleaned up the area with a rotary abrasive wheel on an angle grinder...
Then chased the crack with a slitting disc in the angle grinder...
Then drilled a hole at each end of the crack to stop it propagating...
Then welded it all up with the MIG welder (0.8mm Mild Steel on CO2 gas)...
Then refitted it all back on the engine, turned the ignition key and up she fires - AND STILL THE BL_ _ DING TAPPETTING NOISE IS THERE !
At this point I was about to call it a day and then while checking the distributor cap, I felt a puff of hot gases on my hand.
A quick feel around the base of the distributor and I could feel what felt like a circular hole in the cylinder head, just below the fuel pump and facing the bulkhead. Placing my finger over the hole the tappetting noise stops !
With bated breath I inserted my camera phone down the back of the engine and took about 5 pics before I got what I wanted ...
This was the picture I got...
And this is were it is in relationship to the rear of the cylinder head...
It looks like its a corroded head plug core - but only exhaust gases is coming out it, no water or oil.
Questions
1. How do I repair this?
2. Do I have to take the cylinder head off?
3. Whats the part number ?
4. and where can I get one from?
Cheers
Shaun
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silver zuk Off-Road Guru
Joined: 10 Oct 2007 Odometer: 1800 Location: surrey
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Posted: Thu Dec 27, 2007 8:57 pm Post subject:
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hi Shaun what the hell is that plug for my engine makes that noise i will have a look tomorrow and see if i have the same problem
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patroldriver1 Just got MTs
Joined: 09 Dec 2006 Odometer: 343 Location: blackpool
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Posted: Thu Dec 27, 2007 8:59 pm Post subject:
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can you tap it n put a bolt in it ???or bung it up ???
__________________________________ what do they put in flys to make them stick???
www.nw4x4response.co.uk |
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Little Toe Guest
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Posted: Thu Dec 27, 2007 9:30 pm Post subject:
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Not sure if I can plug it with a bolt, as I'm not sure what it might block off.
Here's a close up ...
As it's got exhaust hot gases and is under considerable gas pressure, I'm not sure if using a would work either
Cheers
Shaun
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patroldriver1 Just got MTs
Joined: 09 Dec 2006 Odometer: 343 Location: blackpool
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Posted: Thu Dec 27, 2007 9:40 pm Post subject:
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hmmmm dose the metal look weldable ???
__________________________________ what do they put in flys to make them stick???
www.nw4x4response.co.uk |
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Little Toe Guest
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Posted: Thu Dec 27, 2007 10:13 pm Post subject:
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not sure - it might be steel or it might be a copper base alloy.
Anyone got a loose head that they can have a look at and confirm where the hole goes to?
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Nathaniel Difflock Royalty
Joined: 13 May 2003 Odometer: 17901 Location: North, North Yorkshire
1979 Suzuki LJ
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Posted: Thu Dec 27, 2007 10:17 pm Post subject:
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I have a removed engine up at the farm, will try and look tomorrow night.
__________________________________ Nat
If You Open Your Mind Too Much Your Brain Will Fall Out |
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(pete) Mud Obsessed
Joined: 19 Nov 2006 Odometer: 5806 Location: aldershot
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Posted: Thu Dec 27, 2007 10:24 pm Post subject:
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i will pop to the shed and have a look for ya back in five
__________________________________ X-RATED 4x4 systems |
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Little Toe Guest
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Posted: Thu Dec 27, 2007 10:25 pm Post subject:
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Thanks
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(pete) Mud Obsessed
Joined: 19 Nov 2006 Odometer: 5806 Location: aldershot
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Posted: Thu Dec 27, 2007 10:32 pm Post subject:
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rite just been out and had a look and that hole on the head i have in the shed is threaded mate I'm sure i have the right one
i looks like a mount hole for the dizzy
ill just drop you a pm with my number mate give me a quick call of send me yours and i will call you
__________________________________ X-RATED 4x4 systems |
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Little Toe Guest
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Posted: Thu Dec 27, 2007 11:11 pm Post subject:
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Cheer Pete.
He's a pic showing how there's a passage running from the No.4 exhaust manifold, then turns at right angles and then mates up with the cast tube that runs across the rear of the cylinder head.
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(pete) Mud Obsessed
Joined: 19 Nov 2006 Odometer: 5806 Location: aldershot
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Posted: Thu Dec 27, 2007 11:15 pm Post subject:
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here ya go you can see where the wire goes
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(pete) Mud Obsessed
Joined: 19 Nov 2006 Odometer: 5806 Location: aldershot
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Posted: Thu Dec 27, 2007 11:45 pm Post subject:
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i don't think it is to be honest Shaun come up with a good one on the phone could well be a heat exchange for the intake heating built in to the intake manifold itself but its a strange one that much is obvious
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4x4rick Off-Road Guru
Joined: 06 Dec 2007 Odometer: 1900 Location: J25 M25
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Posted: Thu Dec 27, 2007 11:46 pm Post subject:
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hi , if its hard to get to and u don't want to remove the head how about some liquid metal to bung it up? would take the heat and pressure....Ricky
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Little Toe Guest
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Posted: Fri Dec 28, 2007 12:09 am Post subject:
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Just been chatting to Pete ( Bonerattler) and Pete (xxamtex) and studing the Haynes book of lies - and blow me down with a feather, Haynes manual was actually useful
Mind you that's only because it was written for the US market, and not the English market.
Anyway, I digress, if you turn to page 6.6, diagram 7.1b ...
what you mean you don't have a Haynes manual
okay here's the page....
and if you look at the cylinder head to the left of the picture, you can see a dotted tube running under the cylinder head and into the inlet manifold.
Thats for the EGR (Exhaust Gas Recirculation System) and is only applicable on US spec zukes, not on UK spec zukes.
So all I have to do is weld up the EGR take-off hole on the exhaust manifold...
and NO MORE TAPPETTING NOISE
I'll weld it up tomorrow and post the good news (hopefully )
Cheers
Shaun
ps, a big thanks to both Pete's for helping me out on this.
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(pete) Mud Obsessed
Joined: 19 Nov 2006 Odometer: 5806 Location: aldershot
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Posted: Fri Dec 28, 2007 12:26 am Post subject:
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grayspeed i was wrong i stand corrected on that one
Shaun i guess you are a happy bunny now nice job bud get it welded up and should be sorted
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xamtex Difflock Royalty
Joined: 02 Dec 2003 Odometer: 11903 Location: nuneaton
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Posted: Fri Dec 28, 2007 1:15 am Post subject:
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just spotted first pic.....kitchen sink?????your missus still talking to you????
__________________________________ gods zoo is mighty....BUT..his fence is too low.? |
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Little Toe Guest
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Posted: Fri Dec 28, 2007 1:24 am Post subject:
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She stopped talking to me years ago Pete Doing things like that on a regular basis keeps her quiet
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Nathaniel Difflock Royalty
Joined: 13 May 2003 Odometer: 17901 Location: North, North Yorkshire
1979 Suzuki LJ
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Posted: Fri Dec 28, 2007 10:54 am Post subject:
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Well thats wierd!
Well spotted, get it bunged up quick!
__________________________________ Nat
If You Open Your Mind Too Much Your Brain Will Fall Out |
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Little Toe Guest
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Posted: Fri Dec 28, 2007 2:36 pm Post subject:
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I took a quick video so that you folks can hear what this mysterious tapetting noise actual sounds like. You can see be putting my finger over the hole and lifting it off again and hear the difference it makes...
http://www.youtube.com/watch?v=FLKSBJhhR_Y
I then took the exhaust manifold off - yet again ( I can now get it off in under 5 mins now )
and then welded up the EGR hole on the manifold...
then dressed it with the trusted angle grinder and a file...
Then chucked it all back on and hey presto - the mysterious tappetting noise has now gone -
Cheers,
Shaun
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oshimon Mooch Master
Joined: 24 Oct 2003 Odometer: 6786 Location: Jerusalem. Israel
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Posted: Fri Dec 28, 2007 4:58 pm Post subject:
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Excellent thread!
And the most amazing thing about it?
Quote: | I then took the exhaust manifold off - yet again ( I can now get it off in under 5 mins now )
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The bolts on mine scare the heebie-jeebies out of me, I'd rather let the thing sound like a tractor than have a go at them!
Simon 'is starting to fear parts of the zook' Owen.
__________________________________ There are some days when even my lucky underpants can't help.....
For Ian's sake, desperately trying to keep up at the back. |
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Little Toe Guest
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Posted: Sat Dec 29, 2007 12:20 pm Post subject:
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Hi grayspeed - you don't need to plug both ends as on UK spec zukes only the exhaust end of the EGR tube is open, the other end is left un-machined, and only gets drilled through to the inlet manifold for US spec zukes. So all I've had to do is weld up the exhaust side.
Cheers
Shaun
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srcars Winch Assistant
Joined: 03 Sep 2006 Odometer: 72 Location: Dorset
1990 Suzuki Samurai
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Posted: Mon Dec 31, 2007 12:14 pm Post subject:
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Thanks Little Toe
I could never find the cause of the noise. Manifold off welded up and refitted this morning and no more annoying bl**** tapping.
Your a star
Happy New Year Every Body
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Philpy Just got MTs
Joined: 24 Nov 2007 Odometer: 349 Location: Cornwall
1985 Suzuki SJ
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Posted: Sun Mar 14, 2021 9:54 am Post subject:
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Well, I’ve recently fitted a 1.6 to my sj and thought I’d bought an engine with a problem. I’ve been chasing this noise for weeks, and sure enough found this hole and covered with my finger and the noise disappears!
Thanks Little Toe
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Philpy Just got MTs
Joined: 24 Nov 2007 Odometer: 349 Location: Cornwall
1985 Suzuki SJ
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Posted: Tue Mar 16, 2021 9:21 pm Post subject:
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Not that many read this forum anymore, but as an update I’ve welded up the hole as per above and sounds so much better. Well chuffed.
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