Hello Guest
« previous next »
Pages: [1]   Go Down

sh-h-a-a-key engine

  • 13 Replies
  • 2524 Views

0 Members and 1 Guest are viewing this topic.

*

Offline skandy32

  • 93
  • 1
  • Gender: Male
  • Zukiworld Rocks!
    • Andy Colver Photography
sh-h-a-a-key engine
« on: January 31, 2007, 04:03:02 AM »
This is doing my head in.... get ready for an essay...

My 1994 vit/kick has one hell of a shakey engine!!
On idle, the engine shakes like mad, making the body shake like mad. Changing gears at low / normal revs, and it stuters to catch up with itself, shaking the car back and forth it feels like. Higher revs it eventually evens out on the road. If the engine is cold when i first turn it on, the auto choke keeps it revving slightly higher, and its a bit stiller, the second its warm, shakey shakey shakey!  >:( If i'm cruising in 3rd about 30mph it's not consistent with power

I had the central/rear engine/gearbox mount replaced, assuming it was this, but its still as bad.

It makes it embarrasing with new passengers and i dont have a clue where else to tinker with :S I love changing bits etc, but now i'm just fed up, and if my kick is sad, im sad! :(

ANY suggestions guys??  ???

Thoughts i've had...
- the air filter's pretty old, so i took her outta her box and did a lap of the block and its very slightly better, but still the same, and im not driving without a filter places
- Idleling needs changing, but surely this wouldnt change my gear change stuttering
- Is it my exhaust thats done it? It didnt do it when i first replaced it
- Would changing all wires/plugs fix it?

Engine info: 8v 1.6, calmini rear exhaust, no cat

Thankyou if you've taken the time to read this :)
Logged
UK Vitara - 2" spring/shock spacers, 3" calmini body lift, 32x11.5x15" BFG MTs, rear half calmini exhaust/no cat, full Alpine ICE

http://www.andycolver.co.uk
*

Offline ed oorklep

  • 637
  • 0
  • Gender: Male
  • 1992 Suzuki Vitara
    • Suzuki Vitara 4x4
Re: sh-h-a-a-key engine
« Reply #1 on: January 31, 2007, 04:19:19 AM »
How is the spark? It seems to me as if you're running on 3 maybe even 2 cylinders? Check your sparkplugs and the wires. Don't have something else atm but surely someone else will come on and put something here  ;)
Logged
http://www.suzukivitara4x4.nl
1992 Suzuki Vitara
8cm Body-lift, 33 12.5 R15 General Grabber MT's.
ARB Bull Bar.
3" Suspension lift.
*

Offline Digger

  • 1991
  • 1
  • Gender: Male
  • 1996 Suzuki X-90 4X4
Re: sh-h-a-a-key engine
« Reply #2 on: January 31, 2007, 04:49:30 AM »
Definately sounds like a miss to me, too. Check all your plugs and wires, as well as your distributor cap and rotor. Heck, if they have never been changed, they are inexpensive tune-up items that will improve mileage, so go ahead and throw all new cap, rotor, wires and plugs in there. Couldn't hurt...
Logged
Had a cool sig pic till I changed the text... sigh...
90 Tracker: "Silver", 2" BL, 1-1/2" Coil Spacers, Strut mount flip, Calmini Header, Winch, 31" Swamper radials, Sold.
98 Suzuki X-90: Calmini 2" Sus, 1-1/4" whl spcrs, 2" Exhaust, Cobra Safari Bar, Neon, Sold.
96 Suzuki X-90: Mostly stock daily driver(for now)
*

Offline takai

  • 907
  • 0
  • Gender: Male
  • Yes, I drove that here. And No, it's not done!
Re: sh-h-a-a-key engine
« Reply #3 on: January 31, 2007, 10:25:31 AM »
I think Digger and Ed have probably diagnosed you problem. I just did the tune-up for my wifes rig (it was running a little rough), I am pretty sure that it had the original parts still on it. It did miss like yours is doing but, it was getting close.

Logged
87 Sammi "Sir Tweak " Rockcrawler 4:1, Mighty Kong , 1.6 16V, Centerforce II, 2" Exhaust, Esteem seats. - Long gone
97 Tracker "Jezebel"  Bone Stock DD

'Cause, I am to misbehave.
*

Offline costa 05

  • 206
  • 0
  • Gender: Male
  • I Love ZUKIWORLD!
Re: sh-h-a-a-key engine
« Reply #4 on: January 31, 2007, 03:47:41 PM »
Also check the vacume lines.
Logged
when in doubt gas it!!
*

sapien

Re: sh-h-a-a-key engine
« Reply #5 on: January 31, 2007, 10:39:14 PM »
make sure the spark wires are in the right firing order as well

has it ever had the valve lash adjusted?  my old '94 had a shakey idle and sluggish power esp. when cold until I adjusted the lash
Logged
*

Offline skandy32

  • 93
  • 1
  • Gender: Male
  • Zukiworld Rocks!
    • Andy Colver Photography
Re: sh-h-a-a-key engine
« Reply #6 on: February 01, 2007, 05:56:45 AM »
ok, i've just been brought n fitted new spark plugs + wires. The dist cap is in v good condition and relatively new, so i didnt see the need.

So far its still the same :S ??? (on idle, havent driven her yet)

What is the right firing order for the sparks? I've read on the net somewhere its 1 3 4 2

I played with it a bit, but swapping them around never got me a smoother engine, only lots worse! lol

I dont know what a vavle lash is! Doubt its ever been adjusted. But it tends to run smoother cold, which i guess is down to the higher idleling

What n where are the vacume lines?

Cheers so far guys... :)
Logged
UK Vitara - 2" spring/shock spacers, 3" calmini body lift, 32x11.5x15" BFG MTs, rear half calmini exhaust/no cat, full Alpine ICE

http://www.andycolver.co.uk
*

Offline Rhinoman

  • 4502
  • 36
  • Gender: Male
  • Bend it, Break it, Fix it
    • Rhinoman
Re: sh-h-a-a-key engine
« Reply #7 on: February 01, 2007, 10:41:45 AM »
Quote from: skandy32 on February 01, 2007, 05:56:45 AM
I dont know what a vavle lash is! Doubt its ever been adjusted. But it tends to run smoother cold, which i guess is down to the higher idleling

What n where are the vacume lines?

Cheers so far guys... :)

Valve lash = valve clearances, aka tappet adjustment.
Vacuum lines are all those little rubber hoses that go all round the carb. They are a bit of an odd size and I haven't been able to source any from any autofactors. They are however the same size as that used on motorcycles for carb breathers and stuff. I got some from a Kawasaki dealer but had to ask the service people because the parts department didn't have any. The workshop had a reel of it though.
Replace the vacuum pipe to the dizzy too, that should be available from pretty much anywhere.
What colour were the plugs that you took out, usually the plugs will give some indication of whats awry?
Pull the plug caps off one at a time, use an old spark plug and make sure its well grounded. That will tell you if you're looking for a problem on one cylinder or on all four.
« Last Edit: February 01, 2007, 10:43:38 AM by Rhinoman »
Logged
2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
*

Offline beercheck

  • 1215
  • 0
  • Gender: Male
  • Go Cards!
    • trivia-nights.com
Re: sh-h-a-a-key engine
« Reply #8 on: February 01, 2007, 05:20:08 PM »
Quote from: skandy32 on February 01, 2007, 05:56:45 AM
I dont know what a vavle lash is!

You can get a valve lash at pretty much any auto parts store.  They're usually in the same aisle with the headlight fluid, blinker grease, muffler bearings and 710 caps.
Logged
'03 ZR2 2dr Tracker, '02 XL-7 drivetrain and electrcs
XL-7 front coils
1.5" rear coil spacers
Monroe 32316 shocks w/2" extenders
235/70-16 Bridgestone Destination A/Ts on stock XL-7 Alloys RRO Rock Rails (Presently removed, as they rusted to all hell; all the bolts were rusted to dust.  Real nice, RRO...) http://www.trivia-nights.com
*

Offline costa 05

  • 206
  • 0
  • Gender: Male
  • I Love ZUKIWORLD!
Re: sh-h-a-a-key engine
« Reply #9 on: February 01, 2007, 08:21:26 PM »
IS THAT A DOODAD OR A WACHAMACHIGGER
Logged
when in doubt gas it!!
*

sapien

Re: sh-h-a-a-key engine
« Reply #10 on: February 01, 2007, 11:11:36 PM »
Quote from: skandy32 on February 01, 2007, 05:56:45 AM
What is the right firing order for the sparks? I've read on the net somewhere its 1 3 4 2
yes, in fact that's the firing order for most any 4-cyl.  if you follow the wires from the dist cap to the plugs in a clockwise fashiion you should see that they are in that order

Quote
I dont know what a vavle lash is! Doubt its ever been adjusted. But it tends to run smoother cold, which i guess is down to the higher idleling
if you are well past 100,000 km then it definitely needs to be done.  there's a tiny gap between the top of each valve and the tappet/rocker that pushes it down, it needs to be set at a very precise spec.  over time this gap becomes more loose and performance & mileage go down and if it's bad enough, the low idle goes to crap.  you can also hear the valves are more noisy in the top of the engine.
Logged
*

Offline skandy32

  • 93
  • 1
  • Gender: Male
  • Zukiworld Rocks!
    • Andy Colver Photography
Re: sh-h-a-a-key engine
« Reply #11 on: February 04, 2007, 03:00:17 PM »
hmmmm, well i changed my sparks n wires like i said, and i've driven another tank into her now... Driving seems very slightly better, but it doesnt feel like this has corrrected the problem :(

When the engine is cold, its soooo smoooth! This is where i've clearly noticed the new sparks (i also have white smoke from the exhaust), but only when coldish, once she's warm, judder juder judder again ??? Dunno if this smoke from the exhaust explains it :S

This is whats really confusing... just the fact, its FINE cold... but the warmer and hotter that temp gauge gets, the more shake and judder between gear changes

The engine only clocked ~55,000miles so would the vacums still need to be changed?

Rhinoman: Surely i can clean all the pipes rather than replace?
The old sparks didnt seem different colour, rather just ground down alot... like missing 2/3mm compared with the new ones

This is just draggin now, but cheers guys for the help!
Andy
Logged
UK Vitara - 2" spring/shock spacers, 3" calmini body lift, 32x11.5x15" BFG MTs, rear half calmini exhaust/no cat, full Alpine ICE

http://www.andycolver.co.uk
*

Offline Rhinoman

  • 4502
  • 36
  • Gender: Male
  • Bend it, Break it, Fix it
    • Rhinoman
Re: sh-h-a-a-key engine
« Reply #12 on: February 05, 2007, 05:02:44 AM »
Quote from: skandy32 on February 04, 2007, 03:00:17 PM
Rhinoman: Surely i can clean all the pipes rather than replace?

They tend to harden with age and that can also perish and become porous. Replacement pipe is so cheap thats its a good job to do on an old vehicle even if it is still running well - preventative maintenance and all that  ;D
Logged
2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
*

Offline ZukiPower

  • 52
  • 0
  • Gender: Male
  • Gwendolyne: '93 Kick
Re: sh-h-a-a-key engine
« Reply #13 on: February 05, 2007, 08:14:06 PM »
My Sidekick is VERY shaky too.

I've made it checked and the problem is simply a pressure leak from the head gasket.

One of the cylinder just don't work at all, so each turn of the crankshaft is followed by an increase and a decrease of speed.  That shake the engine especially at low RPM.

Burn a lot of fuel and oil too since the fuel injected in that cylinder is burned without giving any power and the three remaining cylinders have to compensate for the dead one.

The head gasked will be replaced next week.

Logged
There's a old saying in Quebec who said: "Grosse corvette, p'tite quequette!".  It means "Big cars are for those who have to compensate for a very small wiener".  Therefore, I love my VERY SMALL Zuki!!!
Pages: [1]   Go Up
« previous next »