Sorry that this detail was not provided in the first response. This could be a slave cylinder issue but if the vehicle goes in gear and shifts properly then more than likely the slave is not the issue. If the slave was not separating the clutch from the fly wheel (which is why you would have to pump it) then when you crank the engine, and it turns over it would cause the vehicle to jump because the clutch is still engaged.
What this sounds like to me is the clutch position switch is not functioning which is at the top of the clutch pedal, or the relay is sticking. So, you pumping the clutch, really isn't doing anything it is just a coincidence that this ends up getting the engine to start.
When you are trying to start the engine, is the engine actually turning over and it just won't fire, or does it not do anything when you are trying to start it?
If the engine is not doing anything then it finally cranks and starts, then it could be the switch or relay. However, if the engine is cranking then it finally starts it is not either of these as the starting system is fine. At that point we need to look at fuel or spark as the likely issue.
Here are a couple guides that talk about the differences:
https://www.2carpros.com/articles/starter-not-working-repair
https://www.2carpros.com/articles/car-cranks-but-wont-start
I am attaching the wiring diagram as well which will help with this issue if the engine is not cranking over (no crank no start) as we need to check voltage at the starter to find out if this is where we need to start.
https://www.2carpros.com/articles/how-to-check-wiring
Please let me know this info and we can go from there. Thanks
Nov 4, 2021 at 8:47 AM
