Hot Exhaust - Land Rovers Only

Drewfuss · 05-05-2006, 12:15 PM

Just got a leak on the Y-Pipe welded up (again), and noticed that the exhaust was really running HOT. The coloration is almost purple, indicating that there's way to much heat coming out of the engine. Also, there seems to be just a hint of hesitation when you throttle up the gas. In the fall, I did a tune-up with plugs, wires, cap and rotor. Could there be a missfire in there despite the new parts? Could it be timing related? The engine temperature guage runs in the middle most of the time, but I did get it running about 3/4 last summer on the 95 degree and up days.

Muddy Oval · 05-05-2006, 12:51 PM

too much heat would indicate it's running lean- REALLY unusual for a Rover. Maybe the timing is too advanced.

TerryS · 05-05-2006, 02:28 PM

It's more likely you're running too retarded, not to much advanced. The hesitation is a hint to that too. If it'a way retarded, like firing after TDC, you can wipe out your cats pretty quick. Manual reccomends about 8 dgrees BTDC, but I prefer 10-11 (except when I have to take it to emmissions inspection)

Drewfuss · 05-09-2006, 09:49 AM

Thanks for the info!!

I think I'll change-out the fuel filter as well as check to see if there's any leaky vacuum lines. These are also things that I heard may have an effect on making the engine run lean. Regarding the timing, I figure I should check it out too as you all have suggested. Although, I've never made any adjustments to the timing since I've owned the vehicle, maybe the prior owner did.

05-05-2006, 12:15 PM	#1 (permalink)
Drewfuss Member Join Date: Oct 2004 Location: Amherst, New York Posts: 49 Gallery: 0	Hot Exhaust Just got a leak on the Y-Pipe welded up (again), and noticed that the exhaust was really running HOT. The coloration is almost purple, indicating that there's way to much heat coming out of the engine. Also, there seems to be just a hint of hesitation when you throttle up the gas. In the fall, I did a tune-up with plugs, wires, cap and rotor. Could there be a missfire in there despite the new parts? Could it be timing related? The engine temperature guage runs in the middle most of the time, but I did get it running about 3/4 last summer on the 95 degree and up days. __________________ Drewfuss '63 Series IIa: parabolic spring packs, 33x9.50 mud tires, Kodiak Heater, Fairey OD (SOLD) '95 Jeep YJ: 8"lift (SOA), 35x12.50BFG Muds, Ford 8.8 rear w/detriot & disc brakes, 4.88 gears, warn8000i, daylighters...... '99 Jeep XJ: 3" Skyjacker, 31x10.50 MTR (SOLD) '95 NAS D90 Wagon, front skid plate, brushguard, Hellas, 285/75 R16 Dunlop Mud Rovers, custom guages & dash

05-05-2006, 12:51 PM	#2 (permalink)
Muddy Oval Otherwise known as STEVE Join Date: Oct 2005 Location: Vermont Posts: 1,968 Gallery: 0	too much heat would indicate it's running lean- REALLY unusual for a Rover. Maybe the timing is too advanced. __________________ 2002 Freelander 2000 DII w/CDL 1967 SIIA 109SW Former Rovers 2004 Modded "S" Disco, R.I.P. 2004 G4 Disco 2002 Modded Freelander 1995 Modded Disco 1994 D-90 #8 1993 NAS D110 1990 Range Rover County 1973 SIII 88 1972 Range Rover 2 door

05-09-2006, 09:49 AM	#4 (permalink)
Drewfuss Member Join Date: Oct 2004 Location: Amherst, New York Posts: 49 Gallery: 0	Thanks for the info!! I think I'll change-out the fuel filter as well as check to see if there's any leaky vacuum lines. These are also things that I heard may have an effect on making the engine run lean. Regarding the timing, I figure I should check it out too as you all have suggested. Although, I've never made any adjustments to the timing since I've owned the vehicle, maybe the prior owner did. __________________ Drewfuss '63 Series IIa: parabolic spring packs, 33x9.50 mud tires, Kodiak Heater, Fairey OD (SOLD) '95 Jeep YJ: 8"lift (SOA), 35x12.50BFG Muds, Ford 8.8 rear w/detriot & disc brakes, 4.88 gears, warn8000i, daylighters...... '99 Jeep XJ: 3" Skyjacker, 31x10.50 MTR (SOLD) '95 NAS D90 Wagon, front skid plate, brushguard, Hellas, 285/75 R16 Dunlop Mud Rovers, custom guages & dash

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05-05-2006, 02:28 PM	#3 (permalink)
TerryS Moderator Join Date: Aug 2004 Location: Bloomfield, CT If I died today, I lived there all my life. Posts: 2,141 Gallery: 0	It's more likely you're running too retarded, not to much advanced. The hesitation is a hint to that too. If it'a way retarded, like firing after TDC, you can wipe out your cats pretty quick. Manual reccomends about 8 dgrees BTDC, but I prefer 10-11 (except when I have to take it to emmissions inspection)

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