Complete 4d56 tune up including the fuel pump • COMPLETE 4d56 Tune Up,... How to Tilt/Adjut the Fuel Pump • How to Tilt/Adjust the... Homemade 4d56 prestroke measuring adapter • Homemade 4d56 Prestrok...
If the fuel is still introduced after tdc with the pump one tooth advanced, then how many degrees after tdc does the fuel get injected when the pump is set as intended?
After a fanbelt shredded and went under the cover for the timing belt on a 1.9 diesel Citroen the car wouldn't start ,however the camshaft wasn't smashed up so i put another cambelt on but the car wouldn't start. I never had a dial gauge so I moved the injection pump one tooth at a time and listened to it cranking, I ended up moving the pump by 6 teeth and it ran fine then . I can only conclude that the inside of the pump had been damaged and moving it compensated for the damage.
In a Renault engine happened to me that the pulley tooth broke off, getting the cams off point, take a look and see if your pulley didn't spin on the pump shaft. Could be that, just taking a wild guess. Hard to believe that the pump internals could get damaged to the point of 6 tooth offset... Something would break because the metals in the pump are very stiff, not the bending type... That's my guess
Nice and informative video but I wonder what it would do to the fuel consumption and engine performance, anyways thanks for taking such a pain to pass on the info
@@westendinventor364 from what I've seen, and experienced, diesel takes some time to burn that's why you start injection before TDC as compression raises then ignites the diesel, and you still pumping diesel in untill after TDC, because if you inject all the fuel after TDC at higher RPM is going to smoke because compression will decrease and burn will stop happening, heating up diesel causing black smoke. The point is to ajust timing so it injects somewhere between bTDC and aTDC, finishing injection aTDC. Somitimes injection is started 30° bTDC so it has time to dump all the fuel needed in time for the engine to burn it properly. Timing depends on engine load and RPM
If your vehicle has a running issue.. Sort the issue! Don't start playing around with factory settings to cure a problem, you will only make more problems or make the original problem worse. Factory settings are set for a reason.. Just think about this for a moment. Now, if you are a competent engineer and have a good running machine and you want to tweek power and fuel efficiency... that's good (just so log as you know exactly what you expect to happen). Don't just move pump settings for the hell of it because you can cause so many other issues.
@@engenhokas69 Hugo, I'm in agreement with you there. The issue was to correct an engine running issue by advancing the diesel pump by 1 tooth to correct this fault. If 100% of motor vehicles are produced at a basic tune and are running properly then adjusting the pump to correct any fault is incorrect and will just cause further issues. This person just needs (first of all) to go back to the basics and correct the initial fault. Only then can you start changing setting to improve power/efficiency etc. Just my pov though. 👍
Is it me or , when people say advance the pump, actually mean the things happening first?? I work with motorcycles, and when we refer to advance camshaft or advance ignition timing, we mean that would happen before. And you exactly proved that, at the end. Advance something in a engine mean you want to happen first or before it should do.
In Toyota 1HZ diesel engine the pump and the bottom camshaft and set the same. Can only change the tooth in the top valves cam. Is that right? So can only adjust the timing with the pump twisting 15 degrees?
Is it possible i have turned the top cam around one full turn and mixed up my timing by mistake. Something is making this engine not run properly and ive done the dial gauge this to 1.03-1.09 a dozen times keeps running bad and chocking itself with smoke and stops.
Sometimes you cant mechanically rotate the pump enough to match the right timing, so you use the tooth trick and then rotate to ajust timing. Every pump is calibrated differently. Stock engine is calibrated for low emissions, not efficient power production.
Yes, because diesel is injected until too late and doesn't burn, only gets hot and black like burnt food, that's the smoke. Heated up diesel until it turns into coal
Sir safe po ba Nyan na nka advance po .. Kasi sakin hard start kahit mainint na makina Wala bang magiging issue sa engine .. pasagot po salamat po good blessed po
No, it is not safe. If you went to school for ICE. You should know that you are going to bend the con-rod and crankshaft by advancing the timing of the combustion. Also known as engine knocking. Either you advance or retard the timing you loss power.
I've heard of offsetting by one tooth before with 1990s Lucas EPIC instead of keep replacing a good belt just because it stretches at high rpm. But can't see how that changes the timing (unless it's the mega-old open loop tech with mechanical IP) , The crank sensor and the ECU mapping does the timing, not the teeth. If timing went out of timing actuator control range then the PCM would light the EM light or go limp mode or stop immediately after starting.