×
BigJimnyMeet (North) 2024 (12 Jan 2024)
BigJimnyMeet 2024
14th July 2024
Parkwood Nr. Leeds
14th July 2024
Parkwood Nr. Leeds
Booking now open - Discount for additional vehicles
Click HERE for details
Click HERE for details
×
A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Engine won’t start after engine swap
- Motleycrew
-
- Offline
- Elite Member
-
Registered
Less
More
- Posts: 175
- Thank you received: 23
- Points: 877.00
03 Apr 2023 06:36 #248367
by Motleycrew
Replied by Motleycrew on topic Engine won’t start after engine swap
lol it all goes back to the battery via the ground strap
Please Log in or Create an account to join the conversation.
Less
More
- Posts: 428
- Thank you received: 77
- Points: 2477.00
03 Apr 2023 22:45 #248379
by fordem
Ahh - but it's NOT a single ground strap - take a look for yourself - just pull the negative terminal off the battery and follow the cables - there are two of them, a short one to the firewall and a longer one to the bell housing. The fuel pump and everything other than the engine, so lights, horn, etc., etc., etc., ground via the short cable, the long cable is essentially there for the starter.
So, no, the fuel pump still doesn't use the same ground as the starter.
Replied by fordem on topic Engine won’t start after engine swap
lol it all goes back to the battery via the ground strap
Ahh - but it's NOT a single ground strap - take a look for yourself - just pull the negative terminal off the battery and follow the cables - there are two of them, a short one to the firewall and a longer one to the bell housing. The fuel pump and everything other than the engine, so lights, horn, etc., etc., etc., ground via the short cable, the long cable is essentially there for the starter.
So, no, the fuel pump still doesn't use the same ground as the starter.
Please Log in or Create an account to join the conversation.
- Motleycrew
-
- Offline
- Elite Member
-
Registered
Less
More
- Posts: 175
- Thank you received: 23
- Points: 877.00
05 Apr 2023 09:23 #248390
by Motleycrew
Replied by Motleycrew on topic Engine won’t start after engine swap
Good point
Please Log in or Create an account to join the conversation.
Less
More
- Posts: 21
- Thank you received: 0
- Points: 56.00
07 Apr 2023 16:30 #248426
by spotdoc67
Replied by spotdoc67 on topic Engine won’t start after engine swap
I think I have found the problem.
Looks like a vacuum leak.
I started the engine and gave it a little gas and it revs away which suggests that fuel delivery is fine but it still cuts out at idle.
I started it again and found that spraying carb cleaner towards the back of the inlet manifold and PCV valve allows the engine to continue idling.
I put a new inlet manifold gasket on when building up the engine but need to double check that it is torqued up properly. Not sure if the PCV valve is a problem.
Need to do some more digging!
Looks like a vacuum leak.
I started the engine and gave it a little gas and it revs away which suggests that fuel delivery is fine but it still cuts out at idle.
I started it again and found that spraying carb cleaner towards the back of the inlet manifold and PCV valve allows the engine to continue idling.
I put a new inlet manifold gasket on when building up the engine but need to double check that it is torqued up properly. Not sure if the PCV valve is a problem.
Need to do some more digging!
Please Log in or Create an account to join the conversation.
Time to create page: 0.084 seconds