Plugs are White, HI TEMPs Somewhere
#1
Plugs are White, HI TEMPs Somewhere
hi all..
I have a 1992 VOLVO DL-240 B-230F, auto, A/C (never use it), 132,500 miles. Running great until recently. Here is my problem:
(a) all plugs are white, NGK BPR6ES, gaped .030
(b) temp started rising, heater turned ON, temp gauge back to 9 am. Several times this condition, compensator board not the issue;
(c) exh temps vary wildly: CYL1: 227dC, CYL2: 164dC, CYL3: 205dC, CYL4: 218dC. Temps taken with FLUKE 62 max+ and LASER ON (AVG mode)
(d) new MAF meter (BOSCH). old MAF measurements were OFF according to BENTLY manual;
(e) new OXY sensor, old one no continuity reading per BENTLY manual;
(f) new radiator (NISSEN), old one leaked at 15 lbs pressure;
Here are my questions:
(a) blown head gasket and how do you check?
(b) can computer be "nuts"?
(c) valves out-of-tolerance?
(d) injectors are "hosed"??. Loud clicking after new timing belt install. Timing is right on at 12d BTDC
I will tear into this today. Disappointed as a no rust car, all original. love to drive the "brick"
Thx...VOLVO DL-240s are the best
I have a 1992 VOLVO DL-240 B-230F, auto, A/C (never use it), 132,500 miles. Running great until recently. Here is my problem:
(a) all plugs are white, NGK BPR6ES, gaped .030
(b) temp started rising, heater turned ON, temp gauge back to 9 am. Several times this condition, compensator board not the issue;
(c) exh temps vary wildly: CYL1: 227dC, CYL2: 164dC, CYL3: 205dC, CYL4: 218dC. Temps taken with FLUKE 62 max+ and LASER ON (AVG mode)
(d) new MAF meter (BOSCH). old MAF measurements were OFF according to BENTLY manual;
(e) new OXY sensor, old one no continuity reading per BENTLY manual;
(f) new radiator (NISSEN), old one leaked at 15 lbs pressure;
Here are my questions:
(a) blown head gasket and how do you check?
(b) can computer be "nuts"?
(c) valves out-of-tolerance?
(d) injectors are "hosed"??. Loud clicking after new timing belt install. Timing is right on at 12d BTDC
I will tear into this today. Disappointed as a no rust car, all original. love to drive the "brick"
Thx...VOLVO DL-240s are the best
#2
[CORRECTION] - only tips are white
a little more information on the above. Spark plug tips are white. Nose is clean w/ surrounding fragments of "black" carbon. Weird color, prior to NGK, BOSCH plug tips were pale "yellow".
I am sure I am burning anti-freeze. Oil is non milky, Compression is 150 lbs +/- 5 ea cylinder. So far no liquid (water/anti-freeze) squirting back w/ pressure test.
Any ideas...temp gauge shows 9am w/ rise and fallback to 9am.after 20-30 mins. New rad, no leaks at 20 lbs pressure (engine cold).
Love VOLVOs, really stumped this time. Gladly appreciate any help.
I am sure I am burning anti-freeze. Oil is non milky, Compression is 150 lbs +/- 5 ea cylinder. So far no liquid (water/anti-freeze) squirting back w/ pressure test.
Any ideas...temp gauge shows 9am w/ rise and fallback to 9am.after 20-30 mins. New rad, no leaks at 20 lbs pressure (engine cold).
Love VOLVOs, really stumped this time. Gladly appreciate any help.
#3
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