Question-------------------------
Followup To
Question -
Have to replace the front caliper. Is there any trick to stop the fluid from leaking or moving up the break line? Anything I should be aware of. Just bleed the brakes through the caliper by using the brake peddle? Also plan to replace the front struts at the same time. Any hints on this procedure? Thanks Gene
Answer -
Hi Gene. These are both fairly straight-forward jobs that have no secret tricks. If you follow along in the two different sections of the Haynes manual you'll have no problem whatsoever.
I have never found a good way to stop brake fluid messes when calipers are removed. The Haynes manual says you can buy little rubber plugs...but whenever I try plugging the lines the brake fluid seems to act as a lubricant and lets the plugs slip right out. When you're ready to bleed the brakes you'll just go about it with the happy-to-help family member pushing on the peddle as you release the bleed screw and watch for bubbles, or lack thereof.
The Haynes manual says you only need worry about bleeding the caliper that was removed...I guess from some old bad memory I still bleed the system as a whole whenever I'm bleeding at all. Usually this is the only way new fluid gets introduced and old is flushed out...I'm not very regular about complete brake fluid replacements periodically. Remember, if you go the full route, you'll have to bleed the clutch slave cylinder, since it's part of the same hydraulic system.
Dave
Another question
I noticed that two of the fuel injectors are leaking so slightly where they thread into the block. Can they be removed and resealed or should I replace them? How difficult is the replacement? Any advice will help. Thanks Gene
AnswerGene...the fuel injectors are generally thought of as equivalent to sparkplugs when it comes to changing them....except they're NOT. You'll see replacing them is the same procedure, but as it turns out replacing spark plugs is almost fool-proof, compared to fuel injectors. Look at this web page for the important pieces: http://www.asarus.com/pratique/essence.shtml and refer to step 28.
I assume the leakage you're seeing is the age-deterioration of the rubber seals, which is not surprising, if the injectors have many miles on them (100,000 miles).
If your injectors are aged to 100,000 miles, replace all four $$$$$. If they are not... try to find replacable components like the o-rings and the sealing washers...which could be the source of your problem. That was a very good catch to see seepage from the injectors...I'm impressed with your keen eye.
When you change out the injectors the key step is to lubricate the o-rings with engine oil so they won't tear when you tighten them down. An extra safety trick is to put a little oil on the manifold mating surface...where they will rest...at this stage there can't be too much lubicant. Before you bring all these valuable pieces together rub your forefinger on the mating surfaces, to detect any nicks or sharp points that might be problematic. A little spilled blood is OK when measured against 944 performance...right!?
One last word...I'm always impressed by the keen sense of 944 owners with the desire to do things carefully and right. You, my friend, have made it in to "the inner circle".
"THE INNER CIRCLE"...OK, so that doesn't mean what it might...but yes...I'm impressed by your workmanship.
Dave
