2000 VW Beetle, started having trouble accelerating between 30-40 miles per hour. Replaced spark plugs, plug wires, fuel filter, air filter and intake hose before putting in the shop. Mechanic stated #1, #2 misfire and proceeded to change fuel pump and coil pack. $800 later still doing the same thing. Curious if anyone has a clue as to what the problem may be.

Jim London

• 257 Answers
• Posted on Feb 25, 2009

SOURCE: 98 vw beetle misfiring after rain. New plugs, coil cas cracks????

Hi, Yes it certainly could be especially if water gets in. You should also check the distributor cap. The misfire sounds like an arcing problem so it would have to be one of those two things since you changed the rest. Good Luck!

SOURCE: 2000 vw beetle has a p0301.i already channged

Did you swap out your distributor cap and rotor? Try that first - it's not going to be the cat. You may be losing compression in cylinder #1 one... Hope its the cap/rotor...

SOURCE: MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER

I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.

SOURCE: No spark from coil pack

The most common reasons for them going out are not using dielectric grease properly when installing, and from washing your engine.

I believe this was a huge issue with Volkswagen vehicles

ZJ Limited

• 17989 Answers
• Posted on Nov 24, 2009

SOURCE: how to changing spark plugs on 1 8 turbo vw 2000

In here you can find one DIY: 1.8T Coilpack and Spark Plug Change (with pics)

Hope helped with this (remember rated this help). Good luck.