Michael J.
Jedi Warrior
Offline
I have a 90 XJS Conv. with V-12 that has a Keisler 5 spd Manual Transmission Kit. Car was running fine, but needed a new clutch. Although you can drop the Tremec 5 spd and the Keisler Bell Housing from under the car, I found it hard to get the input shaft to engage the pilot bushing, so I pulled the engine and re-installed the engine and transmission as a unit.
The down side is that you have to disconnect so much to move the wiring harness, etc. to pull the engine that it takes a lot of time to put everything back in place and connected properly.
The problem that I am experiencing is that after connecting everything following reinstallation, I am running rich (trip computer says 4-6 MPG)and have sluggish accelleration with no power. Some gray smoke when trying to accellerate, but Kirby Palm book says that can also be running rich. Some black specks on the back of the trunk (boot) on both sides of the license plate, which is another dead give away to running rich.
The one problem encountered when pulling the engine was that when removing the main electrical harness that includes the ignition amplifiers and connection for the front crankshaft magnetic pickup for the Marelli ignition from the valley of the "V", I broke the connector for the crankshaft sensor. I replaced the AMP connector and also tried replacing the magnetic pickup cable. The problem persists.
I tested injector spray pattern, since it took a couple weeks for the removal and installation and I thought some gas might have gummed up a couple injectors, but the spray pattern was fine. I verified plug wire routing because I had disconnected a couple wires to clear the electrical harness, ran a compression test while the spark plugs were out to see if they were carboned up (no soot on the plugs at all), averaged 200 PSI cold for compression test.
It runs fine at idle. You can smell the gas if you back up in reverse. It is hard to get above 4,000 RPM.
I had to make a slight adjustment to the throttle potentiometer to get .33 vdc at idle. It was .51, but I attributed that to the fact that I had removed the turntable from the tower and there is some play for the four studs when it bolts down. I traced each vacuum line and found it to appear to have correct routing.
I haven't got a clue what to check next.
Any Thoughts???
The down side is that you have to disconnect so much to move the wiring harness, etc. to pull the engine that it takes a lot of time to put everything back in place and connected properly.
The problem that I am experiencing is that after connecting everything following reinstallation, I am running rich (trip computer says 4-6 MPG)and have sluggish accelleration with no power. Some gray smoke when trying to accellerate, but Kirby Palm book says that can also be running rich. Some black specks on the back of the trunk (boot) on both sides of the license plate, which is another dead give away to running rich.
The one problem encountered when pulling the engine was that when removing the main electrical harness that includes the ignition amplifiers and connection for the front crankshaft magnetic pickup for the Marelli ignition from the valley of the "V", I broke the connector for the crankshaft sensor. I replaced the AMP connector and also tried replacing the magnetic pickup cable. The problem persists.
I tested injector spray pattern, since it took a couple weeks for the removal and installation and I thought some gas might have gummed up a couple injectors, but the spray pattern was fine. I verified plug wire routing because I had disconnected a couple wires to clear the electrical harness, ran a compression test while the spark plugs were out to see if they were carboned up (no soot on the plugs at all), averaged 200 PSI cold for compression test.
It runs fine at idle. You can smell the gas if you back up in reverse. It is hard to get above 4,000 RPM.
I had to make a slight adjustment to the throttle potentiometer to get .33 vdc at idle. It was .51, but I attributed that to the fact that I had removed the turntable from the tower and there is some play for the four studs when it bolts down. I traced each vacuum line and found it to appear to have correct routing.
I haven't got a clue what to check next.
Any Thoughts???