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Originally Posted by samsag12 Gurus i need to clear some doubts regarding the following:
1. Can a left hand moving wiper's machine replace the right hand moving one. Can they be fixed to the car with out any modification & alteration.
2. Whats the procedure to change the spark plug of a PP. I have the basic tools for accomplishing the said job so wanted to know can it be done as a DIY.
3. Are the closed type radiators of Diesel fiats and Padmini S1 same in design. What about the availability of the S1 radiators & its price. |
The wiper motors on S1s were cable operated types. Mostly the orientation of the wiper blades shouldn't make a difference here.
Changing sparkplugs in a Fiat is a very simple and straightforward. As you mentioned having tools (mostly a box wrench of the specified size), removing the plugs is straightforward. However while fitting new plugs, ensure that the following guidelines are followed to the 'T'.
1. The market, atleast in Mumbai is overloaded with duplicate Bosch spark-plugs. Try to locate a authorized Bosch service center in your area, typically they service the diesel injection pumps, alternators, etc and are present in most cities and towns. Bosch Mico has two variants for our specification i.e. M14*1.25 short thread. The model numbers are WQ7BC and W175Z1. I prefer the WQ7BC in my cars. Check the electrodes of all sparkplugs before purchasing them. The model number printed on the ceramic insulator should also match with our requirement.
Even if you fit these new plugs directly the car will run, but things will end there. If you want the car to perform exactly the way it is meant to, go to step 2
2. The workmanship on these plugs has gone to the dogs over the years. I could notice the difference in quality over the last two years itself. If you notice carefully you'll see that the center electrode and the ground electrode ( Refer the attached image for nomenclature) are not in line. Using a nose plier, very carefully and cautiously get them in a straight line.
When you hold the plug inverted and look straight from the top, you should not be able to see the center electrode. You can use a typical school steel scale for reference.
3. From the company, these plugs come with 0.6mm (24 thou) of gap. PALs specification is 0.9mm (36 thou) which earlier used to work perfectly but with the new plugs, from the past 2-3 years, never works correctly perhaps due to quality issues. After lot of trials, I have noticed that 0.7mm (28 thou) works the best. Use a clean, oil free feeler gauge to set the plug gap to 0.7mm (28 thou). It is imperative that the feeler gauge should be sterile clean
Check the alignment of center and ground electrode again.
4. Now the fit the sparkplugs onto the car. Ensure that the high tension terminal is tight. The sparkplug should screw in freely and fit snugly. Do not use force and never over-tighten. The threads on cylinder head which being made up of aluminium can be ruined easily. I have learnt it the hard way.
5. Make sure that the high tension cables are sterile clean and fit snugly with a click without any slag.
This is also a good time to ensue that your dwell angle and timing are in order. I can assure you that you'll be blown away with the smoothness and refinement of the engine when you start it not to mention the power.