Fuel pump

WARNER90

MEMBER
2008 HONDA CIVIC
2.2L
4 CYL
FWD
MANUAL
115,000 MILES

Can not hear the fuel pump priming when I turn on ignition. Car is also difficult to start when hot, but okay cold. Car runs fine when going. Have been told it could be the main relay but can not locate it. I have checked fuses and all okay. All started after I had fuel lines replaced. Any ideas on problem and where relay may be?

Tuesday, August 9th, 2016 AT 8:53 AM

6 Replies

HMAC300

MECHANIC
48,601 POSTS

The fuel pump priming is normal, but if fuel lines were run to wrong areas, or one is blocked like a return may be problem. Also plugged filter which is probably In tank on your car. There are three relays two under hood fuse box and one in dash box. See pictures.

Images (Click to make bigger)

Was this

answer

helpful?

Yes

Tuesday, August 9th, 2016 AT 9:30 AM

WARNER90

MEMBER
4 POSTS

Hi, I used to hear the priming of pump but now nothing at all since fuel lines have been done. As I have said it starts fine cold but once up to temperature if I stop car its difficult to start again, but does eventually. Can not think of what else it could be apart from faulty relay. Should I return to garage that done the fuel lines or is it possible it could be the main relay?

Was this

answer

helpful?

Yes

Tuesday, August 9th, 2016 AT 10:12 AM

WARNER90

MEMBER
4 POSTS

Hi, just to add there is also no click when I turn on ignition and no pump priming.

Was this

answer

helpful?

Yes

Tuesday, August 9th, 2016 AT 10:17 AM

HMAC300

MECHANIC
48,601 POSTS

Check fuel pressure with a gauge auto parts rent it.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Was this

answer

helpful?

Yes

Tuesday, August 9th, 2016 AT 1:22 PM

WARNER90

MEMBER
4 POSTS

Thanks for reply. Would this make a difference when car is hot or cold with start problem? If so can you explain why as I just cant get my head around it?

Was this

answer

helpful?

Yes

Tuesday, August 9th, 2016 AT 1:42 PM

HMAC300