Troubles again

[Grover-98]

I know this is a Land Rover forum but i ussually get some good quick responsos from you guys :) so to increase my chances of fixing the zook i am posting on here as well.

Ok so here is my dilemma yesterday morning a mate laid it on its left side i pulled in back onto its wheels and to be extra careful left it for 4 hours (guessing thats plenty of time) then checked all off the fluids prior to starting it they were all fine. At first it started and ran rough but after a few revs it cleared the cob webs and was running like always :) so we decided to take it for another run i was driveing it on a very basic flat track with some rocks i got a hole in the exhaust and kept going then after a while it wouldn't idle and now it surges when driveing. I have drained the carby any other ideas?

Cheers! And you will all be glad to know it is always the Disco that saves the day, as fun as the zook is the Landy just crawls easily to what ever stupid track the zook is stuck on :p

Cheers! hope to hear from yas!

[PAT303]

You haven't blocked the exhaust or restricted it in anyway?.VW flat fours won't run with a hole in the exhaust,maybe the zook is the same?. Pat

[Grover-98]

It has a hole in the exhaust but thats all i can see, it will kick over with some throttle and then you need to keep it reving to keep it running and even then it is rough.

I will check more of the exhaust.

[Grover-98]

There is a hole in the exhaust and there is a dent in it as well. Nothing i would consider to dramatic ;)

[big guy]

A VW will go without an exhaust, well mine has plenty of times, just not with a squashed muffler.

Perhaps you have restricted the air flow too much as suggested.

[Grover-98]

But if it were that why would it run and just not idle? i have tried increasing the idle. What trouble could of the lay over played in this issue?

[Grover-98]

I just set the idle to about 1100rpm and it started first go and the idled for around 2min before dieing i didn't rev it and it did not require and throttle to get it started. Could the hole in the exhaust be causing turbulence hence it will not hold a constant rpm rather it rises and falls between around a gap of 200rpm?

If this is the problem should i just cut the exhaust before the hole as it is only a bush basher i the hole is at the join to the back of the muffler.

By the length of time it idled and the fact that it will drive i know its not a spark issue or nor is it a fuel issue ;)

[zulu Delta 534]

I am in no way an expert in such matters but sometimes the back pressure created by the exhaust system can be crucial to an engines performance, (well it made about two gears difference to a V8 diesel Merc.) so depending on where you have holed the exhaust system there is a possibility that your problem could lie in these realms. Perhaps if you simply plate the hole (coke can) and see if it makes a difference. Has the pipe been crimped further along the system.
Regards
Glen

[long stroke]

Yeah just cut the exhaust off anyway you don't need it:D

[Grover-98]

I'v heard that holes in exhaust can cause "turbulence" would someone be able to explain to me what this means and im guessing that could be what it is as i have checked everything else and it will idle now for a fair while and will rev fine but flutters a little. I am suspecting now it could be due to the hole in the exhaust which i did whilst i was driving over the rocks.

Cheers!

[Grover-98]

I am in no way an expert in such matters but sometimes the back pressure created by the exhaust system can be crucial to an engines performance, (well it made about two gears difference to a V8 diesel Merc.) so depending on where you have holed the exhaust system there is a possibility that your problem could lie in these realms. Perhaps if you simply plate the hole (coke can) and see if it makes a difference. Has the pipe been crimped further along the system.
Regards
Glen

There is a slight dent in the exhaust further up the pipe but it has had that for years apparently so i am not concerned for that. The hole is well more of a snapped exhaust! :o i just had a close look and the weld where the pipe is conected to the back of the exhaust is split all the way around so i am fairly sure that could be the problem!?

Shall i just cut if off completly at the crack with a hack saw? as it shold still be slightly quiet with the muffler in place!? ;)


Cheers!

[mike 90 RR]

I'v heard that holes in exhaust can cause "turbulence" would someone be able to explain to me what this means and im guessing that could be what it is as i have checked everything else and it will idle now for a fair while and will rev fine but flutters a little. I am suspecting now it could be due to the hole in the exhaust which i did whilst i was driving over the rocks.

Cheers!

It's a 2 stroke motor??? .... They need the exhaust to maintain back pressure // as do all 4 stroke motors

Plug the hole up via cutting and wrapping a tin can around the pipe and secure it with fencing wire

:)

[V8Ian]

I think you're barking up the wrong tree, go for the carby.

[Grover-98]

I think you're barking up the wrong tree, go for the carby.

I drained the carby first ;)

[B92 8NW]

I drained the carby first ;)

But if its not idling, it might be a problem with the idle jet.

[V8Ian]

But if its not idling, it might be a problem with the idle jet.

most likely full of the very fine gung that resides in the bottom of the bowl; until inverted :D
Once the crud is in the jet(s) draining the bowl will not help, sorry.

[Slunnie]

I'm putting money on the carby also.

idle is the least affected by the exhaust and 4 strokes, 2 strokes, they all run with broken, cracked, holed and missing exhausts. A 2stroke you may eventually seize though, but thats not relevant.

Does this thing have a fuel filter on it? The other thing that may be worth checking is if the float is jamming somehow.

[Grover-98]

Yes it has a new filter! I am also now convinced it is the carby so i will need to strip it down and clean it out ;)

[JDNSW]

I agree almost certainly carby, specifically some of the gunk stirred up has blocked the idling jet (or a passage leading to it). There is also a possibility that it is flooding due to damage to the float or needle valve - this will also stop idling.

John

[Grover-98]

Well i had a great day everything worked in my favor i took the carby out and blew compressed air into the jets and the idle solenoid. And put it all back in then with much anticipation turned the key and...:D kicked over like a dream runs smoother then it did when i first got it!

Thanks for all of your advice, i think i will keep it on its wheels from now on to prevent this from happening again.:angel:

James.

[Redback]

Well i had a great day everything worked in my favor i took the carby out and blew compressed air into the jets and the idle solenoid. And put it all back in then with much anticipation turned the key and...:D kicked over like a dream runs smoother then it did when i first got it!

Thanks for all of your advice, i think i will keep it on its wheels from now on to prevent this from happening again.:angel:

James.

Or at least service the carbie no and then, just in case:p

Baz.

[V8Ian]

I hope you turned the ignition off as it was rolling over. It's hard for the oil pump to pick up on it's side. ;)

[Grover-98]

Yeap! Both times i had it shut of before it was completely over a natural response i guess :p