Weak start? Does this sound normal to you? [Video] - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

x_hawker · 05-04-2014, 02:31 PM

Hi guys, so the car has a weak start for some reason; got the starter and battery checked out, and they tested fine. The positive terminal was corroded so I replaced it but it still sounds kind of weak for the first couple cranks (usually it's like 4 weak sounding cranks til the car starts). What do you guys think about this?

https://www.youtube.com/watch?v=hBx7...ature=youtu.be

UPDATE: After 1 hour of driving
https://www.youtube.com/watch?v=EQRc5iVWlNw

x_hawker · 05-05-2014, 11:48 AM

what nobody knows what's wrong with it? lol

jr_ss · 05-05-2014, 07:05 PM

I'd go through and clean all your grounds. It's amazing the havoc caused by corroded terminals and connections. As long as it's starting I wouldn't worry about it. If I had to point at something, I'd say the battery before the starter.

x_hawker · 05-06-2014, 01:35 AM

Just realized that it only starts bad after the engine is hot. The longer it's been driven, the harder it is to start. I read that it could be the Coolant temperature sensor or maybe something about the fuel pump?

Updated vid after an hour of driving:
https://www.youtube.com/watch?v=EQRc5iVWlNw

Protius · 05-06-2014, 03:30 AM

Clean all your battery connections on the battery, the starter and your main earth. With heat comes resistance, with resistance comes voltage drop to the starter and sluggish starting. If the terminals are dirty you've got resistance from the get go and heat is just adding more. Could also be a starter on the way out and heatsoak is causing internal resistance in the brushes etc and giving the same result.

x_hawker · 06-03-2014, 02:27 AM

Starter was the problem. /Thread Thanks guys.

05-04-2014, 02:31 PM	#1
x_hawker Leaky Injector Join Date: May 2013 Location: Orange County, CA and San Jose, CA Age: 31 Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	Weak start? Does this sound normal to you? [Video] Hi guys, so the car has a weak start for some reason; got the starter and battery checked out, and they tested fine. The positive terminal was corroded so I replaced it but it still sounds kind of weak for the first couple cranks (usually it's like 4 weak sounding cranks til the car starts). What do you guys think about this? https://www.youtube.com/watch?v=hBx7...ature=youtu.be UPDATE: After 1 hour of driving https://www.youtube.com/watch?v=EQRc5iVWlNw Last edited by x_hawker; 05-06-2014 at 01:35 AM..

05-05-2014, 07:05 PM	#3
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,410 Trader Rating: (35) Feedback Score: 35 reviews	I'd go through and clean all your grounds. It's amazing the havoc caused by corroded terminals and connections. As long as it's starting I wouldn't worry about it. If I had to point at something, I'd say the battery before the starter. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

05-05-2014, 11:48 AM	#2
x_hawker Leaky Injector Join Date: May 2013 Location: Orange County, CA and San Jose, CA Age: 31 Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	what nobody knows what's wrong with it? lol

05-06-2014, 01:35 AM	#4
x_hawker Leaky Injector Join Date: May 2013 Location: Orange County, CA and San Jose, CA Age: 31 Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	Just realized that it only starts bad after the engine is hot. The longer it's been driven, the harder it is to start. I read that it could be the Coolant temperature sensor or maybe something about the fuel pump? Updated vid after an hour of driving: https://www.youtube.com/watch?v=EQRc5iVWlNw

05-06-2014, 03:30 AM	#5
Protius Join Date: Sep 2012 Location: Australia Age: 35 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Clean all your battery connections on the battery, the starter and your main earth. With heat comes resistance, with resistance comes voltage drop to the starter and sluggish starting. If the terminals are dirty you've got resistance from the get go and heat is just adding more. Could also be a starter on the way out and heatsoak is causing internal resistance in the brushes etc and giving the same result.

06-03-2014, 02:27 AM	#6
x_hawker Leaky Injector Join Date: May 2013 Location: Orange County, CA and San Jose, CA Age: 31 Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	Starter was the problem. /Thread Thanks guys.