jomjom3535 0 Posted February 23 Share Posted February 23 Hi Problem with Injector number #4 - 5.0 mm3/st 1) Swap injector #4 with #3 no change in #4 still 5.0 mme/st - so cylinder 4 always giving 5.00 mm3/st no matter what injector 2) Put new reconditioned injector in #4 - no change in the feed back volume 3) In active mode stalled fuel injector 1,2,3 & 4 no change in injector #4 What is the problem Is in the DCU, wiring issue , seal or cylinder valve issue Have the full readings , i can post Quote Link to post Share on other sites
johnatg 405 Posted February 23 Share Posted February 23 I'd suggest that you have a head gasket failure. Any signs in the coolant or coolant level? Any signs in the oil? Can you get a compression test? Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 The value is + 5.00 mm3/st Was thinking head gasket , at full rev there is some movement in the coolant but though that was normal, i will try a compression test see what i get across the cylinders Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 But - after a while few min the smoke turns black , and the exhaust leave black soot on ground , temp stable, car judders on acceleration and sometimes gets Injection malfunction code P1238 but can clear and does not come back for a long period Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 OK did compression test through the glow plugs , Cylinder #1 320 psi , Cylinder #4 325 psi (suspect injector at 5.0 mm3/st) So what now Quote Link to post Share on other sites
johnatg 405 Posted February 23 Share Posted February 23 P1238 doesn't necessarily mean an injector problem. It can be set when a cylinder is operating poorly. I still think head gasket - common on IS220d. It may be OK with a compression test but show a problem when running. A sniffer test on the coolant might show combustion gases. I'm clutching at straws though. Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 I will connect pipe and bottle of water to overflow , remove the rubber on the cap and see if i get any bubbles - should i let it warm up Quote Link to post Share on other sites
johnatg 405 Posted February 23 Share Posted February 23 PS beware of excess fuel in the exhaust - it can overspeed and blow the turbo. Quote Link to post Share on other sites
steve2006 2,113 Posted February 23 Share Posted February 23 It’s not the 5th injector throwing fuel in when it shouldn’t be is it? What’s the EGR valve looking like? Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 Only 120K klm on engine Quote Link to post Share on other sites
johnatg 405 Posted February 23 Share Posted February 23 I think you'll get bubbles anyway - may not be very conclusive Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 Just replaced 5th Injector with a new one no change on smoke and cleaned EGR few times still smoke , still injector 4 at +5.0 mm3/st Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 Yes i think i will get bubbles anyhow - so will check Quote Link to post Share on other sites
steve2006 2,113 Posted February 23 Share Posted February 23 Have you got diagnostics for live data, injector opening pulses? Quote Link to post Share on other sites
pope111 1 Posted February 23 Share Posted February 23 yea get the head gasket tested with blue liquid Quote Link to post Share on other sites
jomjom3535 0 Posted February 23 Author Share Posted February 23 Data readings Idle for IS220D 2008 IS220 2/21/2021 8:19:34 PM [Engine Stored] System [Parameter] [Value] [Unit] Vehicle Speed 0 km/h Engine Speed 792 rpm Calculate Load 25.4 % MAF 7.53 gm/sec Atmosphere Pressure 99 kPa(abs) MAP 95 kPa Coolant Temp 55 C Intake Air 13 C Intake Air Temp (Turbo) 21 C Engine Run Time 41 s Initial Engine Coolant Temp 53.7 C Initial Intake Air Temp 17.5 C Battery Voltage 14.1 V Alternate Duty Ratio 35 % Accel Position 0.00 % Accel Sens. No.1 Volt % 15.6 % Accel Sens. No.2 Volt % 32.1 % Actual Throttle Position 86 % Throttle Close Learning Val. 17.3 deg Diesel Throttle Learn Status OK Throttle Sensor Volt % 21.5 % Throttle Motor DUTY 42.3 % Injection Volume 9.60 mm3/st Inj. FB Vol. for Idle 3.68 mm3/st Inj Vol Feedback Learning 0.9 mm3/st Idle Signal Output Value 1 Injection Feedback Val #1 -3.5 mm3/st Injection Feedback Val #2 -1.5 mm3/st Injection Feedback Val #3 -0.7 mm3/st Injection Feedback Val #4 5.0 mm3/st Pilot 1 Injection Period 0 us Pilot 2 Injection Period 251 us Main Injection Period 426 us After Injection Period 0 us Pilot 1 Injection Timing -19.2 deg (CA) Pilot 2 Injection Timing -8.3 deg (CA) Main Injection Timing -3.9 deg (CA) After Injection Timing 22.3 deg (CA) Injector Memory Error No Error Target Common Rail Pressure 38960 kPa(abs) Fuel Press 38530 kPag Fuel Temperature 34 C Fuel Route Switching Valve OFF Intank Fuel Pump ON Target Pump SCV Current 1246.3 mA AF Lambda B1S1 0.997 AFS Voltage B1S1 0.00 V AF Sensor Learning Value 1.85 V Target EGR Position 19.2 % EGR Lift Sensor Volt % 62.8 % EGR Close Learn Val. 3.72 V EGR Close Lrn. Val. 3.72 V EGR Close Lrn. Status OK Target Booster Pressure 93.69 kPa(abs) VN Turbo Command 73 % Exhaust Temperature B1S1 76.2 C Exhaust Temperature B1S2 73.1 C DPF Differential Pressure 0.300 kPa Diff. Press. Sensor Corr. 0.2 kPa Exhaust Fuel Addition FB 1.00 DPF Thermal Deteriorate Normal DPF No Activate Activate DPF PM Block No Block Catalyst Memory Error No Error DPNR Status Reju (S) Standby DPNR/DPF Status Reju(PM) Standby Starter Signal OFF Starter Control OFF Starter Relay OFF ACC Relay OFF Neutral Position SW Signal OFF Stop Light Switch OFF A/C Signal OFF # Codes(Include History) 1 MIL ON Run Distance 0 km Running Time from MIL ON 0 min Time after DTC Cleared 14 min Distance from DTC Cleared 0 km Warmup Cycle Cleared DTC 0 TC and TE1 OFF Electric Fan Motor OFF Data Reading after 40min 2008 IS220 2/14/2021 7:32:11 PM [Engine Stored] System [Parameter] [Value] [Unit] Vehicle Speed 0 km/h Engine Speed 949 rpm Calculate Load 16.0 % MAF 17.82 gm/sec Atmosphere Pressure 100 kPa(abs) MAP 106 kPa Coolant Temp 80 C Intake Air 9 C Intake Air Temp (Turbo) 30 C Engine Run Time 2444 s Initial Engine Coolant Temp 80.6 C Initial Intake Air Temp 26.8 C Battery Voltage 14.1 V Alternate Duty Ratio 33 % Accel Position 3.90 % Accel Sens. No.1 Volt % 20.3 % Accel Sens. No.2 Volt % 36.4 % Actual Throttle Position -1 % Throttle Close Learning Val. 17.2 deg Diesel Throttle Learn Status OK Throttle Sensor Volt % 69.8 % Throttle Motor DUTY 58.8 % Injection Volume 5.95 mm3/st Inj. FB Vol. for Idle 0.38 mm3/st Inj Vol Feedback Learning 0.9 mm3/st Idle Signal Output Value 0 Injection Feedback Val #1 -2.1 mm3/st Injection Feedback Val #2 -1.5 mm3/st Injection Feedback Val #3 -1.1 mm3/st Injection Feedback Val #4 4.6 mm3/st Pilot 1 Injection Period 146 us Pilot 2 Injection Period 161 us Main Injection Period 125 us After Injection Period 0 us Pilot 1 Injection Timing -14.0 deg (CA) Pilot 2 Injection Timing -9.9 deg (CA) Main Injection Timing -5.8 deg (CA) After Injection Timing 21.4 deg (CA) Injector Memory Error No Error Target Common Rail Pressure 38470 kPa(abs) Fuel Press 37310 kPag Fuel Temperature 46 C Fuel Route Switching Valve OFF Intank Fuel Pump OFF Target Pump SCV Current 1261.0 mA AF Lambda B1S1 0.998 AFS Voltage B1S1 0.00 V AF Sensor Learning Value 1.85 V Target EGR Position 0.0 % EGR Lift Sensor Volt % 75.0 % EGR Close Learn Val. 3.75 V EGR Close Lrn. Val. 3.75 V EGR Close Lrn. Status OK Target Booster Pressure 95.07 kPa(abs) VN Turbo Command 73 % Exhaust Temperature B1S1 120.6 C Exhaust Temperature B1S2 116.8 C DPF Differential Pressure -0.579 kPa Diff. Press. Sensor Corr. 0.3 kPa Exhaust Fuel Addition FB 1.00 DPF Thermal Deteriorate Normal DPF No Activate Activate DPF PM Block No Block Catalyst Memory Error No Error DPNR Status Reju (S) Ready DPNR/DPF Status Reju(PM) Ready Starter Signal OFF Starter Control OFF Starter Relay OFF ACC Relay OFF Neutral Position SW Signal OFF Stop Light Switch OFF A/C Signal OFF # Codes(Include History) 0 MIL ON Run Distance 0 km Running Time from MIL ON 0 min Time after DTC Cleared 35 min Distance from DTC Cleared 0 km Warmup Cycle Cleared DTC 0 TC and TE1 OFF Electric Fan Motor OFF Quote Link to post Share on other sites
jomjom3535 0 Posted February 24 Author Share Posted February 24 Any suggestions Quote Link to post Share on other sites
jomjom3535 0 Posted February 27 Author Share Posted February 27 Any suggestion how to fix Quote Link to post Share on other sites
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