12th November 2007

Changing Spark Plugs - Mitsubishi 3.0 V6 24valve

If you're new here, you may want to subscribe to my RSS feed. Thanks for visiting!

 If your late model Pajero, Challenger or Magna is due for it’s 100 or 200,000km service it is possible to save yourself quite a bit of dough by replacing the spark plugs yourself. It is a reasonably straight forward job to do and can be done with a basic spanner, screwdriver and socket set. Allow yourself plenty of time though, quite a few hours will be needed to finish the job.

 There are a few precautions that you need to be aware of, nothing too drastic just little things that will make the job easier for you and they are outlined below. I had actually got halfway through this job before growing a brain and realising that this information might be useful to our readers so I’m all the steps in reverse so please don’t shoot me if there is anything I have left out! I will try my best to cover everything.

 OK, dust off the tools and let’s get down to it.

Important Notes to Remember.

  1.  Allways replace the spark plugs with Platinum or Iridium plugs. Yeah they cost a bit more but you do not want to be doing this job every 20,000km or so. Your parts supplier should be able to set you up with the right plugs.
  2. The spark plug leads will be quite difficult to remove. Try twisting the leads first, a little each way until they come loose and then pull them out.
  3. A smear of anti-sieze compound or even a smear of engine oil on the spark plug threads will prevent the new plugs from binding up in the alloy heads and make removal easier next time.
  4. When you remove a component sit the bolts back into the holes where they came from. Because we are dealing with a lot of bolts this will make the re-assembly so much easier. No more trying to guess which bolt went where!
  5. A foot-long length of hose that fits over the porcelain section of the spark plug is useful for extracting the plugs once you have them loose.
  6. If you find it necessary to remove any of the leads from the coils be sure to mark them clearly, both on the lead and it’s coil. You don’t want to find out later that you don’t know which lead goes to which coil.

spark-plug-replacement-006.jpgspark-plug-replacement-002.jpg

mits-spark-plugs-018.jpg

 

 

 

 

 

 

 

 

 

 

 

 

The first step is to remove the air intake. Release the four clips around the air filter housing, release the throttle cable from the intake, remove the electrical connector from the air flow meter, remove the PCV hose from the intake and undo the clamp around the throttle body.

 mits-spark-plugs-017.jpg

 

 

 

 

 

 

 

 

 

 

 

Time to remove the throttle body. Number and remove the three vacuum hoses on the top of the tb, remove the 10mm bolt holding the throttle cable and earth strap, loosen the two 12mm nuts holding the throttle cable to it’s mount and remove the cable from the tb, remove the electrical connector from the air bypass at the bottom of the tb, and then remove the four 12mm bolts holding the tb to the intake manifold. Take a note of which way the gasket sits between the two and do not remove the two coollant hoses from the bottom of the throttle body, there is enough slack in them to simply move the tb to the side out of the way.

mits-spark-plugs-016.jpg

 

 

 

 

 

 

 

 

 

 

 

 

Now to remove the wiring harness that comes across the manifold. This is self explanatory, if it’s plugged in and in the way - unplug it! Once you have all connections and harness mounts undone move the harness out of the way.

 mits-spark-plugs-014.jpg

 

 

 

 

 

 

 

 

 

 

 

 Remove the four 12mm bolts holding the bracket in place and remove the plug leads from their holder.

mits-spark-plugs-015.jpg

 

 

 

 

 

 

 

 

 

 

 

 

Remove the fuel pressure regulator vacuum hose and remove the 10mm bolt holding the electrical connection and harness bracket - this allows access to the first plug lead.

mits-spark-plugs-013.jpg

 

 

 

 

 

 

 

 

 

 

 

 

Remove the 10mm bolt holding the two connectors to the intake manifold. One thing to rememer here is that when re-assembling, the wires for these two connectors go under the black bracket in the second picture up.

mits-spark-plugs-011.jpg

 

 

 

 

 

 

 

 

 

 

 

 

Time to remove the three coils. My advice is to remove the 10mm bolts holding them down but do not remove the plug leads unless you absolutely have to. With a bit of manouvering the coils can be moved enough not to cause any problems with the leads still attached. There is also two 12mm bolts holding the fuel supply and return lines to the manifold that have to be removed. Remove the PCV hose from the manifold at this time also.

 mits-spark-plugs-012.jpg

 

 

 

 

 

 

 

 

 

 

 

Working on the left side of the manifold, remove the brake booster vacuum supply, 10mm bolt holding another earth strap, the charcoal canister vacuum hose and the vacuum hose at the rear of the manifold. (Yeah, ok, I’m not sure where this last one goes to!)

 mits-spark-plugs-008.jpg

 

 

 

 

 

 

 

 

 

 

 

On the same side as above, remove the two 12mm bolts from the manifold bracket and the two 12mm bolts holding the hot air intake - this has a gasket that usually falls down when the bolts are undone so be careful!

mits-spark-plugs-009.jpg

 

 

 

 

 

 

 

 

 

 

 

 

 Working from the front of the car again, undo the three 12mm bolts holding the electrical connectors and bracket. Sit them back in their respective holes in the bracket once it’s removed to avoid confusion when re-assembling.

mits-spark-plugs-007.jpg 

 

 

 

 

 

 

 

 

 

 

 

Getting there! Now remove the remaining 12mm bolts securing the manifold. Some will be hard to see but if you look in the location of the arrows they shouldn’t be too hard to find. On the front of the manifold there is two bolts that hold down a small bracket and this can be tricky to remove. A magnetized screwdriver or small magnet works wonders for removing this. Once all the bolts are removes the manifold should be easily lifted up and out of the engine bay. If it is stuck do not force it, have a look to be sure all the bolts are removed. Be careful not to damage the gasket between the two parts of the manifold if you plan on re-using it.

mits-spark-plugs-006.jpg 

 

 

 

 

 

 

 

 

 

 

 

 And this is what things should look like. Don’t pay any attention to the timing covers being off, I was doing the timing belt at the same time on this engine. BEFORE doing anything place a rag over the intake runners of the lower manifold to avoid getting any dirt or heaven forbid, any solid object down there!

Re-assembly is the reverse of what we have just done with attention paid to the precautions I listed at the start of the article. Visually check the spark plug gap before fitting them and use the length of hose to lower them into their holes. You don’t want to find out that one plug has a closed gap after re-fitting everything!

Doing this job yourself would save you many hours in labour charges and we all know how much mechanics need to charge these days to make a living. As I stated earlier I am writing this in reverse and from memory alone so if you see something I have left out please let me know or if you get stuck and need assistance please email me at autofix@aapt.net.au.

Craig

posted in DIY Tutorials, Servicing your vehicle | 1 Comment

7th November 2007

The 2009 Chevrolet Camaro

 My sincere apologies, the website that I had posted the link to about the 2009 Camaro has now been turned into a parked page so I will do my best to re-create what was there!

 Ok, basically the 2009 Camaro is GM’s answer to taking a classic motor vehicle and modernizing it but still leaving no doubt in your mind that this is simply a re-creation of a once iconic car. Do you like that sentence? Took me about fifteen minutes to write that! Ok, no more horsing around.

 Originally built as a concept car, GM officials decided to push it into production after it was “an instant hit” at the 2007 Detroit Motor Show. Production is scheduled for the end of 2008 with the dealers recieving the first of the new cars early in 2009.  

 The 2009 Camaro is based on GM’s ‘Zeta’ platform, which underpins the Holden Commodore, the new Pontiac GTO and the Pontiac G8. The platform was designed to be adaptable across a wide range of vehicles and is said to be remarkably stiff, well suited to the new Camaro.

 The new car will feature multi-link rear suspension, manual or automatic transmissions and V6 or V8 power. The standard V6 model will recieve the 3.6 litre version of GM’s global V6 and is likely to produce around 240-260 horsepower. The V8 powerplant will most likely be the 6.2 liter Gen VI with around 400 horsepower. GM is currently working on a direct injection version of the V8 and they expect increases in power output and fuel effiency with this engine. There is talk of this engine producing around 450 horsepower! The transmissions will most likely be the six-speed manual and six-speed automatic as found in the Commodore.

 Other than a couple of pictures that is about all I have for you without treading on too many copyright toes, for more detailed information please head on over to Newcarpark.com and try not to drool too much, its not good for your keyboard!

2009camaro2.jpg 

 

 

 

 

 

 

 

 

 2009camaro1.jpg

 

 

 

 

 

 

 

 

 

posted in Automotive News and Views | 2 Comments

4th November 2007

Race Wars (almost) Update No. 2

 Due to work comitments for one of our team members, Race Wars had been put off for at least six weeks. It seems like this thing will never get off the ground the way we are going!

 The first scheduled race was abandoned due to the ‘losing team’ finding their car had a blown head gasket and now Travis has to go to Thursday Island for six weeks to work. At least we now have plenty of time to think of more low-budget mods for the Starion and plenty of time to sabotage the Telstar!

 Race Wars is what we are calling a friendly bet between four mates, divided into two teams, a budget set at one thousand dollars (which includes buying a suitable car) and a trip to Willowbank Raceway to see who is the quickest down the quarter mile.

 To read more details please check out the first post and the first update.

Craig 

posted in Automotive News and Views, Engine Conversions / Projects | 0 Comments


52,222 spam comments
blocked by
Akismet