What would that be?
Posted: Sun Jun 30, 2013 5:18 am
Engine starts, have adjusted the idle speed screw. Engine stalls then sometimes picks up the revs again. Taken the car for trial round (3-4 times), notice lack of power.
Since two weeks have not taken out, trying to find what could be the reason.
Case 1: After the engine stops after running at idle say for 5 minutes then it starts at first kick.
If the engine is started again after couple of hours doesn’t start. Need to remove the plugs clean them and put them back and then after couple of tries it picks up.
I notice that the cylinder 3 & 4 spark plugs are clean in comparison with cylinder 1 &2 (see pictures below).
Case 2: when engine runs and stalls (at standstill)
•I removed the HT lead from cylinder 1 – No changes in rpm/revs
•I take the HT lead close ( say 3-4mm or 0.118/0.157 inch) to the plug, i get a clear blue spark and the revs pick up. As i connect it the revs go down again. If i remove it and keep it close than the revs go up.
Case 3: yesterday cleaned all the plugs, started the engine, it ran well at idle. Removed one by one the HT leads and all cylinders were working well (at least at stand still). Ran the engine for 5-10 minutes, raised the rpm couple of times and stopped the engine.
Removed the spark plugs and the result/physical inspection is as shown in pictures
what could be the reason??
Is it the excess fuel mixture to cylinder 1 &2 ? - how to adjust?
Could it be any problem in HT leads/wires?
Any tappet settings problem ?
Any problem inside the cylinder?
what should I check ? Please help.
The plugs make is DENSO - W16FS-U.
plug1-cyl 1[frame][/frame]
plug2-cyl 2[frame][/frame]
plug3-cyl 3[frame][/frame]
plug4-cyl 4[frame][/frame]
REGARDS
PRADEEP
Since two weeks have not taken out, trying to find what could be the reason.
Case 1: After the engine stops after running at idle say for 5 minutes then it starts at first kick.
If the engine is started again after couple of hours doesn’t start. Need to remove the plugs clean them and put them back and then after couple of tries it picks up.
I notice that the cylinder 3 & 4 spark plugs are clean in comparison with cylinder 1 &2 (see pictures below).
Case 2: when engine runs and stalls (at standstill)
•I removed the HT lead from cylinder 1 – No changes in rpm/revs
•I take the HT lead close ( say 3-4mm or 0.118/0.157 inch) to the plug, i get a clear blue spark and the revs pick up. As i connect it the revs go down again. If i remove it and keep it close than the revs go up.
Case 3: yesterday cleaned all the plugs, started the engine, it ran well at idle. Removed one by one the HT leads and all cylinders were working well (at least at stand still). Ran the engine for 5-10 minutes, raised the rpm couple of times and stopped the engine.
Removed the spark plugs and the result/physical inspection is as shown in pictures
what could be the reason??
Is it the excess fuel mixture to cylinder 1 &2 ? - how to adjust?
Could it be any problem in HT leads/wires?
Any tappet settings problem ?
Any problem inside the cylinder?
what should I check ? Please help.
The plugs make is DENSO - W16FS-U.
plug1-cyl 1[frame][/frame]
plug2-cyl 2[frame][/frame]
plug3-cyl 3[frame][/frame]
plug4-cyl 4[frame][/frame]
REGARDS
PRADEEP