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Discussion Starter #1 (Edited)
Hello,
This for an Accent GLS 2008
For two months, I've had problems with slow cranking of the engine( like the engine would crank longer than usual, then start). This was progressing worse and worse (taking more and more time to start). and sometimes it wouldn't even start from the first time. So I thought it was something to do with the battery. On the day I decide to pick up a new battery, the car wouldn't start (it would just keep on cranking without starting). so I had to jump-start it (Only worked car to car). After I got my car to start, I drove to advanced auto parts to pick up my new battery. the guy tested my old battery and on the reader and it said: "good, needs to be recharged". I changed my battery anyway, and started the car ( it started like a charm) and drove home. After two days I come to drive my car, and it gave me the same problem, it would crank and crank but never start. So I had to jumpstart it again, I drove it to back to advanced auto parts to do a Battery, Alternator, and Starter test and all was good. I thought maybe I have dirty gas in my car or water. So I decided to buy Gum out fuel system cleaner. I drove for some time and parked it. I started it after like 5 hours, and it worked. However, after 2 days I came to start it the same problem occurred. Cranks but never starts. ( I have a feeling when I don't use my car within one day this happens).


Do I need new spark plugs maybe?
 

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Just a note. If the battery voltage drops below 10 volts while cranking then the engine will not start
A small parasitic drain could drop the battery voltage down enough to keep engine from starting
But, still allow for cranking. I would have suggested measuring voltage while cranking.

Thanks for the update. Hope it is really fixed.
 
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