5.4L No compression???
Okay, I REALLY need so sound advice. I have been reading thru the threads and it seems just about everyone here is knowledgeable.
I will be as descriptive as i can. I have a 2004 Navigator with only 56k on it. Been very religious about changing oil every 3-5 k. NEVER had any problems.
Three days ago, I was driving on the highway (75mph) and the low pressure light came on and my truck died. I pulled over and tried to turn it back over, and it started but ran REAL rough. So, not wanting to damage anything, I called the tow and had it flat bedded to the shop. I also want to add, I did NOT hear any clanking or noise like something was broken.
The shop told me I needed new plugs and I should go ahead and replace the coil-overs at the same time (no extra labor) so I did. THEN after that, they told me the truck was running and staying on just fine, but it was running REAL rich, filling the shop with smoke, but not throwing any codes.
They did several “test” to find out what was wrong, and they now say I have 2-3 cylinders with little or no compression. And the say it will be cheaper for me to drop a new block in then to troubleshoot the problem. (by the time book) and want $4,000 to do it. How could it go from diying, running like crap, running fine just rich, to 2-3 dead cylinders.
After looking around on the internet for the whole day, I sure think it could be head gasket or rocker arm perhaps... which I know isn’t $4,000!!!
Last edited by bigmacdave; 08-25-2007 at 02:42 AM.