The British Muscle Car
As you can probably guess from my last post, I am pretty frustrated that there is not a way to properly test the manifold pressure sensor. I want to be able to tell in the future if the one that’s working now has changed its operating characteristics, so I came up with a method to test.
Continue reading “Testing and Adjusting Manifold Pressure Sensor”
I hope you are all staying healthy, and if possible, taking advantage of some self isolation in the garage.
The Jaguar runs excellent again!!!!! Since the move to Denver, the engine has not run right. After trying a number of things and much frustration, replacing the MPS fixed the problem……here is the whole story.
Continue reading “Manifold Pressure Sensor”
I guess that old saying “you get what you pay for” is accurate for fuel pressure regulators as well. After having trouble with the Holley regulator, I did some research and read reviews on different manufacturers and landed on Fuelab. They seem like a specialty manufacturer of fuel pumps and regulators that know what they are doing.
Continue reading “Fuel Pressure – solved”
While investigating the fuel system to try and address the rough running issue, I noticed that the fuel pressure in the rail would drop off quickly.
Continue reading “Fuel Pressure Regulator – Take 2”
In 1973, the carburetor V12 was first introduced in the XJ sedan and Car and Driver observed 9 to 11.5 mpg. The first model with fuel injection was the ’75 XJ12C and AutoTest found a 21% improvement in fuel economy (some was due to higher gearing).
The mantra for Jaguar V12 owners is to avoid the engine running lean or overheating. Here is the journey I have been on to continue improving the cars cooling capability. Continue reading “Cooling System Upgrades”
The bottom engine gaskets have been replaced and…..success…..no more leaking!! Continue reading “Bottom Engine Gasket Replacement”
What is the best oil for the Jaguar V12?
A common trope about the Jaguar V12 engine is that it leaks….frequently…and a lot. Well, my experience supports that generally held view.
While checking the timing as I was troubleshooting the backfiring problem, I wondered if the timing mark plate may have moved. I decided to check if top dead center was really lined up with the 0° advance timing mark. Continue reading “Top Dead Center”