How do I test my injection pump timing?
Turn the engine so that the unit to be checked is toward the TDC of compression stroke (plunger upstroke) so that hair line marking on plunger and pump body are coincided. When hair lines are coincided, stop turning and check the mark on the fly wheel whether timing is correct or not.
How do you check the timing on a generator fuel pump?
The primary method of checking fuel pump timing would be using the manufacturer’s instructions of setting the fuel pump with the engine stopped. For the Bosch type fuel pumps, a small window is present at the base of the fuel pump. Within this window an engraved line can be seen on the spring holder of the fuel pump.
How do you adjust the timing on a fuel pump?
Fuel pump timing can be adjusted by simply adjusting number of shims to the pump base. Add or remove required shims to set required injection timing. For some engines you may also required to manually adjust the relative position of cam with respect to crankshaft to do the job.
Where do you adjust if injection timing is incorrect?
The most common ways to adjust injection timing are programming the ECM, adjusting the fuel injection pump, replacing the camshaft, and replacing the cam followers or gaskets.
How do you set the timing?
Connect a timing light to the engine and check the ignition timing. The initial timing should be 12°11°BTDC (Before Top Dead Center). If the ignition timing is not within specifications, loosen the distributor body installation bolt and adjust the ignition timing by turning the distributor.
How do you check the zero setting on a fuel pump?
ZERO SETTING means, the fuel plunger helix should be inline with the spill port so that there is no injection. This is ensured while assembling the rack in the sleeve of the plunger. One gear of the sleeve is slightly cut which should go in between the two cut gears of the rack, which ensures zero setting.
How important is the injection timing in diesel engine?
Injection timing is an important engine parameter, which significantly affects the odorous emissions. If injection starts earlier, the initial air temperature and pressure are lower so the ignition delay would increase.
What happen if injection pump would not time properly to the engine?
One of the most noticeable problems caused by faulty fuel injection pumps is that your engine is not running smoothly. When the fuel is not entering your engine properly, then it affects the performance of your car. This may not be noticeable at times.