Loss of power and Misfiring while at speed - Suzuki Forums: Suzuki Forum Site
Suzuki Forum Suzuki Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Suzuki Forums: Suzuki Forum Site > Suzuki Models > Other Suzuki Models > Suzuki Alto Forum
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowAuto LoansInsurance Advertise

Suzuki-Forums.com is the premier Suzuki All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-15-2016, 08:16 AM   #1 (permalink)
Member
 
Join Date: Dec 2013
Posts: 35
Gallery: 0
90Ninety is on a distinguished road
Default Loss of power and Misfiring while at speed

OK here's a little background to this issue

Car ( Alto 2004 ) had recently been off-road following a collision . I have got it back on the road after repairing bodywork damage . Car had been off road for around 11 Weeks .

Car is now looking good, since repairing I have taken it for two test drives . THe first was fine , no serious issue for around 5 miles . Today however after around 8 miles of test driving , the car started misfiring and struggling around 2K revs when in any gear

My immediate thought was that this was a coil / spark issue . However after bringing the car home and sitting on drive , it revs comfortably in neutral - No misfiring . Why would it misfire only when accelerating in gear ? Would could it be a ignition/coil/spark issue if revving is fine in neutral ?

I am thinking maybe the petrol has caused some clogging in carb or perhaps something else . ANy thoughts or suggestions ?
90Ninety is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-15-2016, 04:57 PM   #2 (permalink)
Veteran
 
aquanaut20's Avatar
 
Join Date: Oct 2007
Location: FraserValley, BC, Canada
Posts: 8,086
Gallery: 0
aquanaut20 is on a distinguished road
Default

It would be helpful if we knew what engine, and what market the vehicle was made for..

What type of fuel delivery (carb/FI) and what type of ignition (COP/cap and wire)

... Philip
__________________
.... Philip

92 Ford Explorer, 450k
97 Ford Explorer, 400k
99 Tracker, 4dr, 4x4, 2L DOHC, auto 265k

Last edited by aquanaut20; 05-15-2016 at 05:04 PM.
aquanaut20 is offline   Reply With Quote Quick reply to this message
Old 08-12-2016, 03:35 AM   #3 (permalink)
Member
 
Join Date: Dec 2013
Posts: 35
Gallery: 0
90Ninety is on a distinguished road
Default 2003 1.1 Alto Misfire on cylinder 4

Ok So I have an Update guys

I attached an OBD Reader and got a 'misfire on cylinder 4 error code' . Does anyone know which cylinder is cylinder 4?

I had checked the resistance on the coil packs , they seemed normal . I checked the Leads for continuity , they belled out ok also .

I have been led to suspect there could be a leak on the air intake manifold , or possibly a failing spark plug .


For the Record this Alto for the UK market year 2003/4 . I have attached a picture for us to identify its engine type



Here is the car :

90Ninety is offline   Reply With Quote Quick reply to this message
 
Old 08-12-2016, 05:19 AM   #4 (permalink)
Max
Moderator
 
Max's Avatar
 
Join Date: Aug 2006
Location: South Carolina, USA
Posts: 17,305
Gallery: 0
Max will become famous soon enough
Default

Quote:
Does anyone know which cylinder is cylinder 4?
The furthest (last) one, looking from the crank pulley / belts (front) on the engine.

Change out the spark plugs for new, first off.
__________________
'99 Grand Vitara JLX, 2.5L V-6, 4WD, 5 spd std, '00 "Limited" leather interior
'72 Nova. SB, TH-350, PB, PS, A/C.
Max is offline   Reply With Quote Quick reply to this message
Old 08-12-2016, 05:22 AM   #5 (permalink)
Member
 
Join Date: Dec 2013
Posts: 35
Gallery: 0
90Ninety is on a distinguished road
Default

I guess Changing all four would be ideal , however at diagnosis stages I would rather just test with one . However if one stops the misfiring - I will replace all four

If I replace all four and it is still misfiring then I am tossing money needlessly

But thanks for the tip !
90Ninety is offline   Reply With Quote Quick reply to this message
Old 08-12-2016, 05:25 AM   #6 (permalink)
Max
Moderator
 
Max's Avatar
 
Join Date: Aug 2006
Location: South Carolina, USA
Posts: 17,305
Gallery: 0
Max will become famous soon enough
Default

If after replacing the plugs, scan and if you still have the #4 mis-fire, swap #4 coil with any other cylinder coil, run it, re-scan and see if the code follows the coil. IF so, you have found a bad coil.
__________________
'99 Grand Vitara JLX, 2.5L V-6, 4WD, 5 spd std, '00 "Limited" leather interior
'72 Nova. SB, TH-350, PB, PS, A/C.
Max is offline   Reply With Quote Quick reply to this message
Old 08-12-2016, 06:25 AM   #7 (permalink)
Member
 
Join Date: Dec 2013
Posts: 35
Gallery: 0
90Ninety is on a distinguished road
Default 2003 1.1 Alto Misfire on cylinder 4

Good Idea

I did actually try swapping the coil packs , though didn't have a scan tool at the time . Though when swapping I did feel an obvious change in the misfiring . So you may be right about the coil pack

The strange thing is ; on the fluke meter , I compared resistance readings between the coil packs , and they read out the same

I will try this again with the scan tool anyhow

Last edited by 90Ninety; 08-12-2016 at 06:39 AM.
90Ninety is offline   Reply With Quote Quick reply to this message
Old 08-12-2016, 11:00 AM   #8 (permalink)
Veteran
 
aquanaut20's Avatar
 
Join Date: Oct 2007
Location: FraserValley, BC, Canada
Posts: 8,086
Gallery: 0
aquanaut20 is on a distinguished road
Default

As you are adverse to throwing parts (I agree), swapping parts location as Max has suggested is the recommended basic diagnostics.

FWIW, coil resistance reading may not identify a bad or weak coil as the plug state and fuel drench also affect detonation..

Your code reader may give you direction, a LIVE DATA SCANNER would be better.

Using an Oscilloscope would definitely show the full story (wave forms)..

... Philip
__________________
.... Philip

92 Ford Explorer, 450k
97 Ford Explorer, 400k
99 Tracker, 4dr, 4x4, 2L DOHC, auto 265k
aquanaut20 is offline   Reply With Quote Quick reply to this message
Old 08-25-2016, 02:15 PM   #9 (permalink)
Member
 
Join Date: Dec 2013
Posts: 35
Gallery: 0
90Ninety is on a distinguished road
Default Misfiring

OK after swapping coils there were still some obvious misfiring , however the Car needed a drive in order for the car Computer to trigger a confirmed error ( still P304) , it took around 2 miles for the error to kick in after an initial unconfirmed/unverified random errors with a flashing engine light

So I changed the spark , now the car is purring again with all four cylinders . Thanks for the help guys .

Now I have to change the drum breaks cylinder ...

( new thread needed I think )
90Ninety is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Suzuki Forums: Suzuki Forum Site > Suzuki Models > Other Suzuki Models > Suzuki Alto Forum

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki Forums: Suzuki Forum Site forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 04:13 AM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.