Quote:
Originally Posted by leathermang
Why don't you pull your precombustion chambers and see if those five to seven holes where the fuel is dispersed into the combustion chamber after hitting that difuser... you can not check those TINY holes without taking the chamber out of the head ( or the head off the engine ).... They are critical to the burning process....and are one item which might show up more on a cold engine than after warmed up....
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Not a bad idea indeed, and something I would like to look into doing while the injectors are out simply for the sake of having peace of mind on it. I have to make a tool, I have my old 616 head lying in the shop still which I can use for modelling the tool on, and need to get some heat shields (from what I am understanding on past posts I will have and need to replace these). I know they can be pulled without removing the head. I do not plan on disturbing the head itself unless I get some really awkward reading on the compression test after I have a known good camshaft and valve settings, Even at that, if it gets to that level of expense, I may just decide to run it until it quits and part out the car, its really not worth sinking a lot of money into anymore (trans going out and body rust). As long as the mechanicals are good enough to keep it going, & do so safely I'll keep it plugging on for my commuter. I really have probably sunk too much in it already, runs decent though, and looking at the price of a new cam, ($400-600 is my understanding) thats a big ouchie, so I'm looking at finding one at a local wrecker thats still good, and just snagging the whole top mess, towers, followers, etc. so I know everything is matched to work, and I will be looking for something from 80 or better, preferably 81 on, as they have the better cams. I'm hoping someone out here has a parts car or bad engine with a good non turbo 617 top end that might graciously assist the situation.....