How to fix Engine Misfiring - Astra H 2004-2009

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#AstraH #EngineMisfire #Howto
Astra H mk5 2006 Petrol 1.6 engine misfire. Error Code P0303. Which mean Cylinder 3 misfire detected.
So to resolve this issue I have decided to replace all spark plugs and coil pack. I have purchased parts on ebay as they are a lot cheaper. Coil pack in shop costs from £90.
Parts from ebay:
4 Spark plugs - £10
Coil Pack - £28.99
1. First scan what code is stored in ECU using OBD2.
2. Remove plastic cover.
3. Unplug connector on the right side
4. Remove 2 bolts - holding coil pack.
5. Take out the old coil pack
6. Unscrew first Spark plug and replace with new one.
7. Repeat this with all spark plugs.
8. Make sure all spark plugs are tight.
9. Do not overtight them.
10. Insert new #Coil #pack
11. Clear error code.
#astra #h #engine #misfire #spark #plugs #obd2 #coil #pack #error #code #p0303

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20 окт 2020

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Комментарии : 26

@donbrogan3158 14 дней назад

Ive got p300-p304 code coming up. So i guess i have trouble with plugs. They're new . Few months old.

@nemanjamarkovic3806 Месяц назад

My astra h 1.6 77 kw jerking between 1500 - 2200 rpm, no engine lamp on, do you heave idea?

@kostythebest 3 года назад

I did the coil pack and spark plungs and same error comes on... Every time after 1 min of running the engine...

@cormaclogue8323 3 года назад

Yes lad, i have a 1.4 Astra H Gtc 2007 the engine is misfiring so do you rekon its the coil pack n spark plugs?

@simash9213 3 года назад

Hey Mate, its very common problem, it depends when last time it was changed. you can take it to garage if you unsure, they will test for you. Hope that helps :)

@MarkConwayTheBurgerKing 10 месяцев назад

If you have a EcoTec engine and these parts don't fix misfire. Check cylinder compression. Head gasket may need replacing. Done all the above Coil Pak & spark plugs new. Misfire still on #4 code.

@goranmilic2449 3 года назад

Great video! I have an Astra H 1.6 twinport. I get an error when the engine is cold and when they drink it below 15 degrees misfire 303. advice?

@simash9213 3 года назад

Thanks mate, maybe you need to change just a spark plugs 🤔😊

@goranmilic2449 3 года назад

@@simash9213 Three types of spark plugs and bombs have been replaced, but an error still occurs!

@simash9213 3 года назад

@@goranmilic2449 oh that's strange, i just did a quick Google search and it not sure if that will help A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer Read more at: www.obd-codes.com/p0303

@goranmilic2449 3 года назад

Thanks

@nikdelta399 3 года назад

@@simash9213 I had the same problem. Garagist told to buy new coil pack n spark plugs, I did but problem not fixed, then he checked the compression> 2nd cylinder = 0 compression. So here I am with new coil pack n spark plugs [useless] and have to spend more on who knows what

@iainhamishstuartforbes1613 2 года назад

What App do you use to check fault codes, thank you.

@simash9213 2 года назад

Hey, i am using torque lite its on google play store

@madalingeorge52 3 года назад

I got the same problem with my astra H, which simptoms got yours before you changed the spark plugs and coil pack? I am booked for service Saturday but I still have to drive 70 miles everyday, is it alright if I drive it like this? I don't want to damage something else. Scanned and got the second cylinder fault. Thanks

@simash9213 3 года назад

Well my engine light come up and the engine wasn't working fine, sounded more rough and vibrations. I drove mine around 20 miles, and when i replaced the parts. Also, after a couple days i have changed engine oil and filter too. However, personally I wouldn't recommend you to do 140 miles. As it might cause some bigger issues.

@madalingeorge52 3 года назад

@@simash9213 same simptoms on mine, and loss of power, there is no engine light on dash, it's just the simptoms. I have no choice but to drive it for another 140 miles till Saturday. 😪😪😪

@simash9213 3 года назад

@@madalingeorge52 oopsy, hopefully it will be alright. Just make sure that service will change engine oil and oil filter☺️

@madalingeorge52 3 года назад

@@simash9213 yeah already ordered oil and filters, hopefully will be fine till Saturday and nothing else will be damaged. Cheers.

@arnietwo11 3 года назад

Hi, i have a Opel astra h, gtc 2008 here in spain. Engine looks much the same as this one in video. I have error code P0301. So misfire in 1st cylinder. I took out spark plug from No2, and swapped with No1. No differance. So my problem is, do i just go ahead and buy a new ignition coil pack costing €60. How did you know that new coil pack was going to fix problem ?? I could buy new coil pack and there still is a problem ??? I dont have a cylinder head compression tool. Should i get that checked first ??

@simash9213 3 года назад

Hi, of course it would be the best to check cylinder compression, if you don't have a tool you can ask do to in garage, for few euros. I knew that I need to change coil pack as I noticed it only last around 70-90k miles. Last time I changed it was 75k miles ago. so I knew its time for new one. My Friend had similar issue his coil pack lasted about 85k miles. I would recommend you to get new spark plugs too :)

@arnietwo11 3 года назад

Simas, i just took the chance and bought new coil pack online, and spark plugs, total €57. Parts arrived today, 30mins later started her up and perfect !!! Yippppeee Obd reader then cancelled fault code ! So thanx for ur help !!

@simash9213 3 года назад

@@arnietwo11 woohoo that's good news. 😊 well done mate 👌

@ducustefanadriandsa6435 Год назад

Salut am și eu o problema la opel nu îi dă de cap nimeni la service-uri.. Mi-a apărut martorul Motor, am făcut vreo 2 teste diagnoza intre timp. O sa las erorile sa le vezi.. Ce poate o fi , băieții de acolo au zis ca mașina nu are nmk..adevărul este ca merge bine, trage, dar apare martorul motor, A șters eroarea, după un timp a reaparut, iar am fost cu ea la service și am pus testerul..aceleași erori.. Vreau sa spun ca am schimbat Bujiile, sonda lambda, Bobina de inducție ! Toate noi ! Ce o avea ? Mașina merge bine trage, adică nu da semne ca ar fi o problema. chestia e ca apare (check engine) Mulți au spus ca s-ar putea sa fi calculatorul ECU, de la motor. VOI ce credeți? Astra h , 1.6 105cp 77kw , cod motor Z16XEP benzina P0300 PO301 PO302 PO303 PO304 PO314 U2103 Cilindrii diferiti Cilindrul 1 Cilindrul 2 Cilindrul 3 Cilindrul 4 Cilindru necunoscut cu rateuri Bus de date CAN Rateu aprindere recunoscut Rateu aprindere recunoscut Rateu aprindere recunoscut Rateu aprindere recunoscut Rateu aprindere recunoscut Rateu aprindere recunoscut Dereglare/defectiune in functionare

@simash9213 Год назад

Hey, are cylinders not misfiring according to errors? have they measured the pressure inside cylinders?