6.5L Turbo Diesel - Tech Support - Troubleshooting - Performance [Archive] - Page 2

97 3500 6.5 running rough (8 replies)
2002/2003 GMC 3500 Savana cutaway/shortbus (2 replies)
99 6.5, new to this forum (2 replies)
Heard a sound like crumpling a plastic bottle, then a major fuel leak from bell.... (4 replies)
ignition switch (4 replies)
No start and of course I need to get somewhere (6 replies)
Please help!! 6.5 Td 4l80e issue (35 replies)
6.5 surging, black smoke (2 replies)
Be sure to check your starter bracket!! (9 replies)
DB2 4911 pump rebuild. (6 replies)
Realistic Hauling Expectations (10 replies)
High Capacity Oil Filters (5 replies)
Surging issue on my 93 dually. (10 replies)
No Start when warm (10 replies)
1992 GMC 2500 6.5 Turbo Diesel surging and stalling (0 replies)
Idle vibration (9 replies)
Need help deciding: first time 6.5 purchase. (6 replies)
Military 6.5 information needed (6 replies)
Oil in coolant (5 replies)
6.5 intermittent no start help (5 replies)
RPM Jumps from 1200 to 2000 (6 replies)
How many bullets does it take to make you feel better... (5 replies)
Instrument panel cluster pinout (3 replies)
Vacuum pump pulley (19 replies)
94 6.5 Diesel pulling multiple codes (1 replies)
Unidentified Slapping Sound Coming from the Motor. (4 replies)
Suburban fuel tank removal (2 replies)
1993 6.5 td. Black fuel (1 replies)
Loosing all boost off idle (8 replies)
1998 6.5 T/D Bought for parts (23 replies)
Alarm or What??? (1 replies)
1995 6.5 T/D No Hot Start (4 replies)
2000 Chevy K3500 Crewcab 4x4 Dually 6.5l TD auxiliary coolers (1 replies)
Injection pump causing a runaway (4 replies)
Fuel Leak 6.5 TD HELP (46 replies)
Identify Hydroboost (1 replies)
Block Identification (7 replies)
wiring problem (0 replies)
1994 3500 Front drive shaft (0 replies)
throttle issue (2 replies)
Bolts for dual thermostat housing (10 replies)
Which Resistor to use? Or No Resistor at all? (17 replies)
Vortex to mechanical 6.2 conversion (16 replies)
f-fish bite, but,.. (1 replies)
94 3500 Oil problem. (5 replies)
skipping on deceleration? (22 replies)
Good 6.5 Service Source (2 replies)
The GM 6.5L Diesel (1 replies)
No actual ip timing signal (40 replies)
94 trans not locking up (4 replies)
1995 6.5 no start No glow plug light (5 replies)
Removing fuel tank (4 replies)
re-awakened from the dead (7 replies)
94 6.5L Oil problem. (4 replies)
OPS/fuel pump FUSE keeps popping (9 replies)
A word about new turbomasters (2 replies)
Another glow plug thread (5 replies)
Excessive smoke 6.5 (44 replies)
The Last 6.5 (1 replies)
Tps sensor??? Where is it an how do I get to it (2 replies)
glow plug connectors (5 replies)
6.5l td rough running under 1500rpm when warm (2 replies)
6.5 Optimizer Oil leak, possible low pressure (21 replies)
Engine and transmission temp issues (0 replies)
Replace ECM and/or PROM? (6 replies)
6.5L temperature issues (19 replies)
Issue with the go fuse (6 replies)
Last 6.5L (3 replies)
4L80E Shifts out of Overdrive/4th Gear (18 replies)
Stepper engine (0 replies)
SWENGINES,com (12 replies)
Mechanical 6.5 turbo start run problems (6 replies)
P0236 (2 replies)
1997 Van ECM (4 replies)
adding a fuel pressure gauge (14 replies)
stepper motor (4 replies)
Remanufacturing a 2009 GEP 6.5 Optimizer... (8 replies)
Broken (18 replies)
What "Local Programming" needs doing on a replacement ECU? (7 replies)
DTC codes (1 replies)
Need 6.5 Optimizer longblock (11 replies)
6.2L/6.5L Diesel Shops in the Miami/Fort Lauderdale, FL. area (1 replies)
Lifter preload (8 replies)
RockAuto Discount Code (1 replies)
6.5 Belt Idler (3 replies)
6.5 turbo Diesel transmission help (7 replies)
6.5 T/D motor mounts and brackets (6 replies)
Head studs in truck (1 replies)
93 K2500 6.5 turbo diesel ** I (2 replies)
Quality Machine Shop in Florida (0 replies)
Can you get 18:1 pistons? (14 replies)
Eric's 6.5 Tow Build (0 replies)
p42 workhorse Dies at running temp (11 replies)
2001 gmc 3500 van 6.5 t/d (2 replies)
Efi to mfi (3 replies)
95 lift pump not pumping while truck is running (5 replies)
Help needed from Sweden (90 replies)
Odd timing question (30 replies)
Timing Gear Set Splash Shield (3 replies)
1995 6.5 no high idle at cold start-up (2 replies)
GEP 6500 intercooler manifold (11 replies)
Heater core hose. (4 replies)
Back up and working! (1 replies)
6.5 water pumps (37 replies)
Sudden Acceleration 6.5 Turbo Help! (6 replies)
6.5 dual stat cooling upgrades back in stock! (29 replies)
Rarety of 6.5 suvs (5 replies)
Need a comprehensive part list for: (4 replies)
Excessive Smoke (19 replies)
Engine problem (5 replies)
ecm electrical nightmare (13 replies)
Best clutch for 1996 with NV4500 (3 replies)
Block identification (19 replies)
Front Starter support Bracket, is this it? (35 replies)
ODB II Code P1656 driver 2 line 6 error (1 replies)
Banks 6.2 turbo on a 6.5,, (6 replies)
Help, fuel to, not out of injection pump. (2 replies)
GM turbos,, (4 replies)
Clicking noise from radio,, (9 replies)
Power steering fluid overflowing when bleeding brakes? (6 replies)
Starts and dies,, (8 replies)
Codes 84 and 99 (5 replies)
Trans cooler (30 replies)
"NOTICE" P400 is out of production for good!! (0 replies)
Sudden Change in Glow Plug Cycle (3 replies)
Lift off the body on a 1996 suburban (0 replies)
Help new engine !!!!!! (2 replies)
6.5 IP Pump issue (1 replies)
Radiator: OEM or All Aluminum? (38 replies)
Front end problems (5 replies)
cranking problems (11 replies)
Cracked Navistar block (8 replies)
Electrical issues (2 replies)
Date code stamped in block near PMD (1 replies)
Suburban Resurrection (2 replies)
Original Fuel Pickup sock for our 6.5s No Longer Available (21 replies)
Fluidampr and crankshaft pulley (2 replies)
Remove engine/gearbox 1993 6.5 turbo diesel (9 replies)
Truck stalls when warm (22 replies)
My 6.5L engine does not start (5 replies)
6.5 blowing smoke after rebuild (6 replies)
Top end noise. (8 replies)
Bucking-Fishbite Under Load- Again and Ongoing (11 replies)
Complete Optimizer without timing tab (15 replies)
Will it bolt up (1 replies)
Temp gauge not working (6 replies)
engine shuts down 1995 6.5 (14 replies)
6.5 engine swap (3 replies)
Crankshaft pulley bolts (1 replies)
6.5 Turbo Diesel (2 replies)
Compressed thickness of a stock head gasket? (6 replies)
'92-'93 throttle cable. (3 replies)
99 suburban high idle switch (0 replies)
Acquired a non-running 6.5 TD (20 replies)
1992 6.5 T/D Fuel lines (6 replies)
Uncommanded full throttle (5 replies)
'92 vacuum pump (3 replies)
Grounding (12 replies)
Turbo upgrade (11 replies)
Update (18 replies)
Recommended 6.5-literate mechanic in Portland, OR (21 replies)
Low boast (4 replies)
Success!!!! (2 replies)
6500 OPTIMIZER drop in (1 replies)
Frustrtated (8 replies)
Single water neck on 96 model (4 replies)
Wicked Wheel 2 (10 replies)
Performance exhaust (7 replies)
Voltage drop and wastegate issue (4 replies)
Knock (5 replies)
1993 intermittent no start (6 replies)
97' 6.5l turbo shuts off at random (14 replies)
Pushrods (7 replies)
6.5 Turbo Diesel p0236 (3 replies)
Another flavor of air in fuel problem (5 replies)
Shaved block? (0 replies)
Engine Identification (4 replies)
Got my 18:1's (30 replies)
will not crank (3 replies)
need rear hub puller (5 replies)
Differences between truck and Hummer heads (1 replies)
Optimizer 6.5 T/D Oil Filter Adapter (10 replies)
Rocker arm retainer buttons (6 replies)
6.5 diesel egr flow insufficient codes (12 replies)
Head rebuilding (2 replies)
Block ID (3 replies)
Help with diagnosis (31 replies)
oil consumption (9 replies)
Rebuilding injectors (1 replies)
Carter P4600HP Fuel Pump (5 replies)
Cruise control (2 replies)
Drain Valve (11 replies)
Obd2-1 questions (1 replies)
Harmonic Balancer (6 replies)
Firewall/Hood Sound Proofing or No? (2 replies)
Stutter/Stall Issue: Troubleshooting/Confirming PMD Failure? (8 replies)
What Engine and Year Do I Have? (6 replies)
6.5 Turbo Diesel (5 replies)
Dual stat crossover on a 95 6.5 T/D (8 replies)
1995 A/C Assembly/installation, coolant sender unit. (1 replies)
130 gpm cooling upgrade explained (3 replies)
Fuel line diagram (3 replies)
Washer identity help (13 replies)
Air in line? (7 replies)
Bracket? (6 replies)
Where to buy new exhaust manifold bolts? (12 replies)
6.5 Starter Help (8 replies)
Need Oil pump bolt (1 replies)
Idle not dropping to base when coolant up to temp (6 replies)
2007 Optimizer (0 replies)
New Heads (7 replies)
6.2 vs 6.5 Injectors (2 replies)
1996 6.5 overheating problem (8 replies)
Advice on removing 93 td6.5 k2500 from nv4500 4wd (6 replies)
6.2 Military engine (7 replies)
Oh, no, what else can go wrong? (1 replies)
Help!! 98 6.53500HD wireing problem (1 replies)
Need help with grounds (4 replies)
VSSB Broadcast codes (2 replies)
Matching rev-counter signal to speed output. (5 replies)
95 K3500 dies,, (21 replies)
'92 Kennedy Cooling upgrade (3 replies)
6.2 heads (11 replies)
Pryometer (4 replies)
TPS for the DB2 pump. (4 replies)
Oil filter reloacation (14 replies)
Mechanical pump timing, am I missing something? (8 replies)
P400 Block Assembly Identification (9 replies)
Cam timing (5 replies)
A little progress on the P400 big valve heads... (1 replies)
Things were just a little too cozy... (57 replies)
6.5 diesel over full on oil, or other problems (14 replies)
Oil pressure and pump questions (7 replies)
6.5 turbo diesel not starting!!! (12 replies)
Banks ottomind (5 replies)
Glow Plug ID (3 replies)
Seller reports, "Not getting Fuel" (4 replies)
Oil Leak (Where Would It Be Coming From) (6 replies)
4L80e Shifting Problems (4 replies)
Blue smoke (3 replies)
Usual recommended 6.5 mods - for RHD conversion (0 replies)
FYI about Headlights (11 replies)
oil bypass valves (0 replies)
The Best Exhaust Manifolds (1 replies)
Swapping 98 ecu with 96 ecu, will it work? (11 replies)
Fixed one problem only to find another: possible fuel leak (6 replies)
Lots of black smoke and no power 6.5 diesel (7 replies)
Diesel Governor Recommendations (26 replies)
Cleaning Aluminum Parts (4 replies)
Date of manufacture (12 replies)