No one? Could this be the EGR valve?

 

Whatching your post with interest.

Also my first post.

2008 model swift similar mileage. Only difference is that I have no misfiring I have a sudden revvingto 6000rpm and is now happening more frequent. Difference is it happens at random while driving. Realy scary when gearing down and suddenly she takes off.

 

I am having the same issue. Did you manage to solve your problem and how?
Thanks

 

Hello mastamike,

I am also facing the same issue. I am driving Swift 2009 lXi and for the past one year i am facing the same. I even built the engine again completely replaced spark plug, Ignition coil, head, nd all. But it is still ter and as u said it is coming and going .
Yesterday (30/01/2016) gave it to Maruti for servicing the problem and hoping for the best.

One Doubt -Did u noticed or heard any hissing when u pressing the gas pedal? Cos, whenver i hear that noise , i see this misfiring. Yesterday when i was on the way to Maruti i dont see any jerk or miss and engine was so normal.
My doubt is may be of Vaccum Leak is happening.

 

OP:

Scary that your mechanic cannot diagnose the issues..

You very well may have a vacuum leak, which is best tested when cold.. You will need to watch your fuel trims for proper diagnosis, and/or use a spray water bottle and cover all intake joints, you will hear and see the results..

... Philip

 

Hi aquanaut20,
Today they have tested my vehicle for Spark plug and Ignition Coil and there is no issues with that. They have checked the Vaccum leak also and i was told it is fine.
Next check is ECM. if that is also fine then they said they need to check the Engine - valves, spring etc.

4 months back only i reworked the engine fully for 60k.

 

If they are checking for leaks when hot they will not locate, heat expands the intake runners, did they use a smoke machine??

A compression test will check the valves and engine timing.

... Philip

 

Yes aquanaut20, they told something about Compression machine only. Engine Hot - i am no sure, and mostly they would have done when it is Cold. Since car was there for last two days, it shouldn't had run.
Will check with them today.

 

solution?

Hi guys! any solution ?

Regards!

Tom

 

I presume the mechanic has used a scanner to check the O2 and Fuel trims, then used a scope to check the current ramps on the injectors and coils, then on to the wave forms for the Crank and CAM sensors...

BTW, they shouldn't be throwing parts unless they have confirmed they are N/S..

... Philip

 

Hello All,

First time poster, long time lurker. Would love some advice on this one please.

My wife’s Swift is driving me crazy. It is a 2005 Swift with 125KM on the clock. I have had ongoing misfire problems for the past 6 months. I have also had a recurring P0420 code.

After replacing the pre-cat o2 sensor the P0420 was resolved.

The intermittent and repeated misfire was initially diagnosed as a faulty coil. You could see where the spark was arcing out of the coil. All coil packs, leads and plugs were replaced. Issue went away for a couple of months.

Misfire returns. Same symptoms, intermittent misfire, no CEL, only under load. Mechanic said they had a bad batch of coils and replaced again. Also put new Iridium plugs in. No misfire for a couple of days. But then returns.

Also a P0108 CEL code appears. Data shows that the manifold pressure when the CEL went on was 118KPA (probably about the atmospheric pressure). Car is running fine otherwise so I clear the code and it sensor is reading normal (about 35KPA when idle or 100KPA when turned off with key on).

Next visit to mechanic, coils inspected and appear fine. Mechanic replaces cam angle sensor. A couple of days later and it is still missing intermittently but only when cold. Take to mechanic but it was running perfectly.

Where it is at now. About every few days, when the car is started (when engine is cold), it shakes and shudders like mad and loses revs to the point of almost stalling. It only corrects itself after revving it up a few times. It then drives with a bad misfire, bunny hopping under load, for the first KM or so until warm. It then runs perfect, really well in fact. When I plug in scanner immediately it shows misfire in various cylinders and random misfire. I have attached the freeze frame data from one of the recent episodes.

What could be the cause of the most recent issue?

Appreciate any thoughts on this as the mechanic is also scratching his head.

Hi. I have a 2016 Swift with 114000 on the clock. I had the same problem and even replaced one coilpack with no improvement. I added a 375ml of hydraulic valve lifter concentrate to the engine oil and never had the problem again. It was R110 so try it and see if it works.

 

I've

Hello All,

First time poster, long time lurker. Would love some advice on this one please.

My wife’s Swift is driving me crazy. It is a 2005 Swift with 125KM on the clock. I have had ongoing misfire problems for the past 6 months. I have also had a recurring P0420 code.

After replacing the pre-cat o2 sensor the P0420 was resolved.

The intermittent and repeated misfire was initially diagnosed as a faulty coil. You could see where the spark was arcing out of the coil. All coil packs, leads and plugs were replaced. Issue went away for a couple of months.

Misfire returns. Same symptoms, intermittent misfire, no CEL, only under load. Mechanic said they had a bad batch of coils and replaced again. Also put new Iridium plugs in. No misfire for a couple of days. But then returns.

Also a P0108 CEL code appears. Data shows that the manifold pressure when the CEL went on was 118KPA (probably about the atmospheric pressure). Car is running fine otherwise so I clear the code and it sensor is reading normal (about 35KPA when idle or 100KPA when turned off with key on).

Next visit to mechanic, coils inspected and appear fine. Mechanic replaces cam angle sensor. A couple of days later and it is still missing intermittently but only when cold. Take to mechanic but it was running perfectly.

Where it is at now. About every few days, when the car is started (when engine is cold), it shakes and shudders like mad and loses revs to the point of almost stalling. It only corrects itself after revving it up a few times. It then drives with a bad misfire, bunny hopping under load, for the first KM or so until warm. It then runs perfect, really well in fact. When I plug in scanner immediately it shows misfire in various cylinders and random misfire. I have attached the freeze frame data from one

 

HI guys, recently also been experiencing some lack of power and high idle when cold. I've been told that cylinder 4 has no compression and I'm adviced to do a engine replacement. Really don't know what to do,dont have money for a new engine and I feel this is not my problem and shouldn't be having to pay the price for this. This must have been a problem from Suzuki side as they are the only people who service my vehicle.

 

Just reporting that no compression in #4 is not good enough, a cylinder leak down will pinpoint the source of the leak...

What yr and mileage is the vehicle ??

 

Hi I have a 2008 Swift Sport (M16a engine with a 5spd) I just brought the car and this has been happening since I brought it... I checked the engine with the cover off and I'm pretty sure the #2 coil pack is Arching on the plug that plugs into it.. looks like it's jumping from the plug to the pack or bolt that holds the coilpack in.. everytime it archs the car does a little cough. It does it low in the rev range and on idol I don't think it happens above 3000rpm it happens on idol and under slight to medium load from 1000 to 3000rpm worse when going uphill or the aircon is on...
I've replaced all plugs and leads with brand new ones the coils I replaced with second hand ones. The problem still persists... I have a code reader and code p0420 appears.... (Does that mean I'm smoking shitty weed? Nah lol jks) I'm thinking I might replace the plug that attaches to the coil pack next.... I think the reason 420 apears is because when the car coughs it would most likely miss sparking the fuel and send raw fuel down the manifold...
When I take all the plugs and wires out and look down the tubes I notice a tiny buildup of something at the bottom of the tube kind of around the plug in 1 small spot in #2 and maybe in another tube I'll try cleaning that off and see what happens as well..
Another road Ive been told to look down is the alternator not working correctly I'm not a mechanic but I hope I'll fix the issue in the end I'll keep you all posted

(edit)
I've done a fair bit of searching on this now and there's no clear awnser... someone's saying maybe the well boots at the bottom of the coil pack maybe warn but I've tryed multiple secondhand coilpacks now all with the exact same arching issue. The plug is actually arching onto the bolt that holds the coilpack in I think
I was going to put a rubber mat under the coil pack and kind of between the plug and bolt where it's aching maybe that will work lol bush mechs... ether way I'm not a mechanic but I'm gonna keep trying stuff till something works...

 

Did you guys manage to solve this? I also having a problem new coils new plugs been ok for like 2 weeks then it came back again car missfire when operating temp when cold runs fine, its so weird most of the time it happens when im running ac and when turning on a intersection yes... Its weird haha but yeah pissed me off i dunno what to do now i also notice a whining noise and my voltage dropping to 12.8 then missfire will happen again you guys reckon its the alternator? Anyone of you check yours?

 

check your accessory drive belt, if thats slipping and the voltage is dropping then that can cause all sorts of random misfires etc

 

Same problem here replaced alternator spark plugs, throttle body, maf and O2 sensor as worked fine for 1 day then again same issues, anyone knows anything? I'm at the point that I want to scrap the bloody thing

 

So you are using the shotgun parts method, now try the diagnostics

 

I managed to track a similar misfire on my 2008 swift down and this isnt a specific ans to your question, likes been said you dont wanna be changing parts willy nilly u can cause other probs too if youre not careful you want to be doing checks/narrowing it down if there arent any codes initially iirc the only 'common' issues are coil packs/leads/plugs and throttle bodies (i swapped mine improved at idle/setting off but u can start with a clean) so theyre the first things to check eradicate any vac leaks and check electrical connections are all tight, clean maf pcv (i cleaned my map to at the sametime) but my issue was mainly due to a partially clogged egr valve which is a quick easy maintenance item job anyway which ll produce a misfire under load. You can also try unplugging it/ various sensors (oh and trying to check injectors andno fuel supply issues) to see if it resolves the issue/runs better unplugged quickly.
I also cleaned my pre cat 02 sensor as a maintenance issue anyway but didnt cure anything.
Beyond that i think youre looking at more indepth analysis hth

 

My car is a 2008 swift sport been having the same issues, misfire, rough idle ect. been to the garage multiple times, changed plugs, coils, clean throttle body’s ect. Still not fixed. Today it when to the main Suzuki dealer and they want to change spark plugs, coils and Abs pump at a cost of £1700. Do you guys think abs pump would cause idle issues and misfire?

 

Any mechanic that wants to start with changing part without proving them N/S is not worth their salt and is after your wallet..

 

I'm no expert but I can't see how something on the braking side would create a misfire correct me if I'm wrong tho, they've spotted another common and expensive fault with your car that's unrelated that ll prolly need sorting (tho it can be reconditioned), however I doubt it'd cause your misfire.
The Colls and plugs cure is the commonest one but you say you've already changed them and is a cheap DIY swap anyway.
Unless they've done a professional scanner based diagnosis you can't really rely on that, and you'll be doing what I and others on here have done and tried and randomly finding the cause of the problem, which I did manage in the end.
What you really need to do is find a proper auto-diagnostician first to try and pinpoint it-tho I don't know that maybe easier said than done too.
Or you'll just be going down the trial and error route too

 

Thanks for reply guys. I’ve owned the car about 5 years and love it. It had a coil pack in 2020. Last June july time it started with the rough idle ect again. Took it to the garage and it had another new coil and 4 new plugs, still didn’t cure it. but just lived with the issue. In November took it to a different garage they said it was the plugs and changed them and clean sensors and throttle body. Last month I took it to a diagnostic place and he said he thought it was the alternator. So I thought I would take it to Suzuki main dealer as I don’t want to keep throwing parts at it. they said they would leave the abs pump but will not do anymore diagnostics until they changed the plugs and coils as it’s codes for misfires. so I’m not really sure what to do. The car drives amazing above 3000rpm. It’s worse when it’s raining the misfire and juddering, and feels likes it’s going’s to stall when the aircon on. It feels like no one can fix my car

 

Youve got my empathy ive read a few similar misfire reports on here without any codes, i cured my own myself eventually mainly by just doing easyish maintenance stuff anyway, but you really need to employ some proper diagnostic procedure, have you got a scanner yourself, i know theyre arent too many suzuki specialists about but theyre a pretty simple car, can you find any mobile purely auto elec/diagnostic in your area or a garage that mainly specialises at that or you may just ending up throwing haphazard parts at it