HT4100 4.1, 4.5, 4.9 Discussion, INTERMITTANT "Missing" and rough running/idle in Cadillac Engine Technical Discussion; well got the injectors swapped out... I was right only about an hour to 1.25 hours to finish up.... 1.5 ...
What all had to be removed when you swapped the injectors? How do you relieve the fuel pressure on the 4.9 engine? The reason I ask is I have a dead injector and am going to do this swap later on this week. Thanks.
When your cars had the dead cylinder from the injector failing what did the plug look like. I have a couple of cylinders dead on mine, but the plug has a fine film of black on it. The engine runs uneven. I have already replaced most of the ignition system. IM just wondering what it could be on my car. Another thing mine does thats weird is the fact I can pull my pcv valve out of the whole and the vaccum leak doesnt affect the car at all. It doesnt do one thing to it and its sucking like it is supposed to. Anyone know?
Automobile(s): 1995 FWB 100,*** miles CURRENT. 1991 Seville 175,000 SOLD
Re: INTERMITTANT "Missing" and rough running/idle
Originally Posted by JeremyG
2. Moved the PS pump off to the side, that required me to take off what I think is the tensioner pully from the serpentine belt so I could get to the big long bolt that held the back end of the PS pump on. I was a bit nervous pulling up and sideways on the PS pump since there's a hard line coming down out of the bottom but it didnt' break
One does not need to remove the tensioner pulley. When you remove the serp. belt that pulley will move down and will open access to that long bolt you have described. I removed the pulley as well, then, after removal of the serp belt I realized it was not really necessary.