Installing the PCV Valve Vacuum Assembly Harness in an Aston Martin DB9

If you’ve been replacing your PCV Valves on your Aston Martin DB9 to cure an oil build up problem in your intake manifolds (check out my other articles on this) it’s likely you’ve had your PCV Valve Vacuum Harness Assembly removed and in this article I will explain how to properly reinstall it. Continue reading “Installing the PCV Valve Vacuum Assembly Harness in an Aston Martin DB9”

How to Replace the PCV Valves in an Aston Martin DB9

In previous articles I’ve described how engine oil can build up in your intake manifolds of your Aston Martin DB9 due to malfunctioning PCV valves (made by Ford of course) and how the PCV system is supposed to work.  In another article, I have covered what parts you would need to order to deal with this, and it included two (2) options; Option 1 is the lowest cost and just swaps the PCV valves themselves, and; Option 2 is my recommended option that swaps the Vacuum Harness Assembly, which happens to also contain the PCV valves.   This article will cover both options. Continue reading “How to Replace the PCV Valves in an Aston Martin DB9”

Removing the PCV Valve Assembly Harness from an Aston Martin DB9

Oil build up in the intake manifold

I’ve already explained why you might need to change the Positive Crankcase Ventilation (PCV) Valves in an Aston Martin DB9 in a previous article (usually because engine oil is showing up in your intake manifolds), and what parts you might need (check out this article).  In this article I will explain the process of how to remove the existing PCV Valves along with their harness assemblies. Continue reading “Removing the PCV Valve Assembly Harness from an Aston Martin DB9”

Parts Needed to Change the PCV Valves on an Aston Martin DB9

If your DB9 needs it’s Positive Crankcase Ventilation (PCV) Valves replaced due to oil buildup in the Intake Manifolds (see my full article on this) then you need to track down the right parts to get it serviced – and that’s what this article is all about.

My enthusiasm for the task led me into trouble (and I can save you from the same mistake if you read through this article).  I wasn’t sure what parts a dealer would normally replace to deal with the oil build up, so I asked the parts manager Rob Sims at HMV England whom I was dealing with.   He promptly sent me the parts diagram, and a list of bits he said they typically serviced.  What I failed to consider was ‘context’, the dealer may be rebuilding an engine and PCV system outside the car, and I was just a newbie trying to do this under the hood on a weekend. Continue reading “Parts Needed to Change the PCV Valves on an Aston Martin DB9”

The Positive Crankcase Ventilation (PCV) System in an Aston Martin DB9 – and what Sucks about it!

This is a weak spot in the DB9 engine.  If you’ve ever removed your throttle body and found a puddle of engine oil laying in the intake manifold chamber, the PCV system is to blame.   In this article I am going to give a short background of the ‘what’s going wrong’, and then in the next articles I will lay out which parts you need and how to replace them. Continue reading “The Positive Crankcase Ventilation (PCV) System in an Aston Martin DB9 – and what Sucks about it!”

How to Change the Coil Packs and Spark Plugs in an Aston Martin DB9

Revealing the Coil Packs on an Aston Martin DB9
Ahh, there are the Coil Packs….

If your DB9 has developed a Lumpy Idle (see my in depth post on this) you’ll be faced with either taking it to the Dealership (and a $1,000+ labor bill plus parts) or undertaking the task yourself over a weekend.  There is a considerable level of skill and determination required to accomplish this feat.  Easily the most complicated service event I’ve done yet on my 9.   If you have the gumption, tools and the time it can be a rewarding and cost saving experience.  I think anyone can do it if you properly prepare. Continue reading “How to Change the Coil Packs and Spark Plugs in an Aston Martin DB9”

Parts Needed to Change the Coil Packs and Spark Plugs in an Aston Martin DB9

Parts Needed for Changing the Coil Packs and Spark Plugs on an Aston Martin DB9
The bits you’ll need

If you have a lumpy idle with your DB9 (like mine was as detailed in this blog post) or are just doing a scheduled service that requires changing the plugs, it will be helpful to know all the parts you’ll need.   Of course, you’re sitting there going ‘Duh – I need spark plugs to change spark plugs you idiot’.   Yes, that’s true, but you also need a small assortment of other bits and bobs to put it all back together Properly. Continue reading “Parts Needed to Change the Coil Packs and Spark Plugs in an Aston Martin DB9”