Turns over but won’t start!

Reply Subscribe

Thread Tools

Search this Thread

06-14-18 | 07:30 PM

Cocky2004

Thread Starter

Driver School Candidate

Joined: Jun 2018

Posts: 3

Likes: 0

From: AL

Turns over but won’t start!

I have an 06 GS300 that on occasion, will not start. Battery is fine. I have figured out that if I remove the vacuum cap just after the throttle body and spray a shot of brake cleaner in the intake, it’ll fire right up. Checked the fuel pressure with it running thinking it may be the filter (not completely sure I can rule out the pump yet) and at idle it’s around 56 psi. There are no codes other than an ocassional evap code, and I’ve replaced the gas cap twice within a year with one from Lexus. But even that code and the failure to start don’t happen together. Anyone else heard of this issue?

Reply Like

06-14-18 | 07:55 PM

SILENTM

Pole Position

Joined: Apr 2014

Posts: 284

Likes: 20

From: CA

Could be your high pressure fuel rail sensor acting up, been hearing a lot about these failing and causing hard/ no start issues

Reply Like

06-14-18 | 08:10 PM

Cocky2004

Thread Starter

Driver School Candidate

Joined: Jun 2018

Posts: 3

Likes: 0

From: AL

Quote:

Originally Posted by SILENTM

Could be your high pressure fuel rail sensor acting up, been hearing a lot about these failing and causing hard/ no start issues

Thanks, I’ve been worried it’s the GDI fuel pump, and I guess it could be but I nor anyone I’ve talked to has any idea of what is going on. It also died after leaving the house, with no warning, but after waiting a minute it started right back up. But still no pattern to any of this behavior.

Reply Like

06-14-18 | 09:43 PM

ibidu1

Lexus Test Driver

iTrader: (1)

Joined: Mar 2012

Posts: 5,805

Likes: 795

From: FL

How many miles are on it? Have you ever had your engine rebuilt on the recall?

Reply Like

06-15-18 | 07:55 AM

Cocky2004

Thread Starter

Driver School Candidate

Joined: Jun 2018

Posts: 3

Likes: 0

From: AL

Quote:

Originally Posted by ibidu1

How many miles are on it? Have you ever had your engine rebuilt on the recall?

120k miles, and no, never rebuilt.

Reply Like

06-15-18 | 08:39 AM

ibidu1

Lexus Test Driver

iTrader: (1)

Joined: Mar 2012

Posts: 5,805

Likes: 795

From: FL

I wonder if your internals are all carbon caked up to the point its choking the engine. You could remove the intake manifold and do a manual cleaning of the heads, and valves. Using solvents and stiff brushes! Also I would clean the throttle body and replace the spark plugs.

Reply Like

06-15-18 | 12:35 PM

gs350fan

Intermediate

Joined: Jan 2018

Posts: 470

Likes: 40

From: NY

Quote:

Originally Posted by Cocky2004

There is a video I posted with this intermittent problem. There is a loose connector in the high pressure fuel rails sensor. You have to read codes to be sure. If that is the case I believe just reseating the connector can do the trick.

Reply Like

Trending Topics

General Car Conversation 2024 - part 2

3k

78.6k
General EV Conversation

4.7k

137.9k
The grim future of Jaguar

40

971
A great article by a "Reviews editor" at R&T regarding why he loves his...

26

498
TPMS Not Displaying After New Tires Install

93

2.5k

08-15-24 | 02:57 PM

Edward2109

10th Gear

Joined: Sep 2012

Posts: 12

Likes: 0

From: OH

Did you ever figure this problem out and fix it?

Reply Like

08-15-24 | 07:20 PM

ibidu1

Lexus Test Driver

iTrader: (1)

Joined: Mar 2012

Posts: 5,805

Likes: 795

From: FL

Quote:

Originally Posted by Edward2109

Did you ever figure this problem out and fix it?

Whats your car doing? If the car cranks, but doesnt start, then it could be a bad fuel pressure sensor on the fuel rail. The signs of it bad, are when you try to start it and the car wont start, but the radiator fans kick on at full blast.