Any idea why my Vauxhall Astra misfires after being started when cold?

I've bought a Vauxhall Astra 17DTi. I am having trouble with it misfiring when it is cold first thing in morning, but once warm it runs great. I have changed the air filter and fuel filter, and I have...

What's causing my Audi A4 to misfire?

My Audi A4 recently developed a misfire on number two cylinder. I've replaced the spark plugs but that didn't resolve it. I checked the coil pack and leads, and they seem ok. I even changed the injectors...

My Ford Mondeo screeches under acceleration - why?

I have a Ford Mondeo 2-litre TDCi. I put some V-Power fuel in it last week and it started belching out black smoke and misfiring more than usual. On further investigation i noticed the large pipe near...

My four-year-old Volkswagen Golf's catalytic converter is disintegrating - will Volkswagen help with repairs?

We have a four-year-old Volkswagen Golf MkV 1.6 FSI petrol. I'm told today by my local non-franchised Volkswagen specialist that the rattling that developed two days ago is the inside of the catalytic...

Why won't my 1995 Toyota Previa 2.4i accelerate properly?

I have a 1995 Toyota Previa 2.4i. If I build up speed slowly then I can get a fair bit of speed out of it (110mph), but if I accelerate hard the power just goes flat and it sounds like there isn't any...

Why does my Citroen C4 Grand Picasso lose power at 30-40mph?

When I change to second gear or third gear in my Citroen C4 Grand Picasso, there doesn't seem to be any power at around 30 to 40mph, so I have to rev the engine until the power returns. What do you think...

Could an aftermarket air filter be causing my Ford Puma to misfire?

My Ford Puma 1.7 1999 V reg has been misfiring lately. Over the last few days it cuts out when I brake and misfires at low revs. When idling I have to keep revving to stop it cutting out. The car seems...

How can I improve my Opel Zafira's misfire problem?

We have had a jerkiness/misfire problem on our 2008 Opel Zafira 1.8i. It happens at just the point the throttle is opening, i.e just as you have resistance on the accelerator. It’s particularly noticeable...

Why is my mother's Mazda MX-5 misfiring?

My mum has a 10-year-old 1.8 Mazda MX-5 Icon. It's been looked after very well, and is in generally good condition, though it doesn't go very far. She has had a problem though recently. The car is not...

Do you have any advice about my Vauxhall Corsa's misfire?

I have changed the coil pack and plugs but my Vauxhall Corsa still has a misfire. It will start ok but it's got some sort of knocking noise coming from the engine. Can you advise on the next checks that...