Right guys need some help here as I am at my wits end!!
Basically the car wont start I just get the starter motor turning over but the engine wont fire.
I initially thought that perhaps she was flooded so I took out the bottom spark plugs which were both bone dry. While I had them out I decided to take the EGI fuse out and turn her over anyways in case there was fuel in there but nothing came out.
So its not flooded!
I replaced the EGI fuse and turned her over with the plugs out and got a reassuring set of regular wooshes with no gaps but no fuel came out of the plug holes even though I turned the car over for about 15-20 seconds although I did get a petrol smell.
Pluged everything back in but still not starting so I started pulling fuses out, all fine nothing blown.
Thought perhaps fuel pump had died so I checked the voltage and thats all fine and due to the car being on a slanted driveway I\'m not to keen on getting underneath the car and disconnecting the fuel filter and turning her over to see if the pump is working.
Has anyone got any ideas of anything else I can check as I am out of ideas at the moment and I need the car running!
I\'ve just had exactely the same problems, I ended up getting it towed....started straight away.
I tried everything you tried first.
Must be the Welsh weather
have you checked you are getting a spark on all 4 plugs?
If you have some try some fresh plugs.
to check fuel is getting through you could disconnect the pipe in the engine bay (on the bulkhead between the block and abs unit) but if it is working you will end up with fuel everywhere.
hth
Matt
Thought perhaps fuel pump had died so I checked the voltage and thats all fine and due to the car being on a slanted driveway I\'m not to keen on getting underneath the car and disconnecting the fuel filter and turning her over to see if the pump is working
can you hear the fuel pump prime ? have you tried starting it on a flat surface,maybe the slanted drive is causing fuel starvation if you dont have much fuel
Thought perhaps fuel pump had died so I checked the voltage and thats all fine and due to the car being on a slanted driveway I\'m not to keen on getting underneath the car and disconnecting the fuel filter and turning her over to see if the pump is working
can you hear the fuel pump prime ? have you tried starting it on a flat surface,maybe the slanted drive is causing fuel starvation if you dont have much fuel
fuel pump relay dude :Thumbs-up
Nope no sound of the fuel pump priming wheras it used to make a humming noise when the ignition was first turned on.
Think I will try disconnecting the fuel hose from the back of the bulkhead and turning her over briefly to see what happens.
Although the cars on a driveway its pointing down the driveway and I have over 1/4 tank of fuel left in her and she\'s started when I\'ve had less in there. I may try jacking her up until she\'s level and see if that makes any difference.
Going to order some spark plugs today.
Where\'s the fuel pump relay located?
Thanks for the responses guys I\'ll let you know how I get on.
what about pulling the fuel lines of the actual pump in the boot or is that dangerous - and then testing
you have narrowed it down to a fueling issue - so thats half the battle won :D
You should beable to hear a hum from the fuel pump when you first turn the ignition on. Sure voltage may be getting to the fuelpump but it doe snot mean the pump is working. I would have expected you to have wet plugs from all those cranks with no start, not bone dry!
There is however a small test you can do for the fuel pump. in the tech stickis there is mention of a two pins you short in the diagnostic box it bascialy pressurizes the fuel system by running the fuel pump. this will allow you to jump in the boot and listen for your fuelpump.
With the plugs pulled and the fuel relay in youe should be able to smell fuel.
Prolly a good place to start then like matt says check your getting spark to all 4 plugs.
Cheers guys. I sat in the boot and got the missus to arm the ignition last night and not a peep from the fuel pump so I am thinking that perhaps my fuel pump has died a death but I dont want to buy a brand new one, fit it and find that isn\'t my fault.
I have a plan!
Tonight if it doesn\'t rain to hard I\'m going to disconnect the fuel lines at the pump and put some plastic bags over the nozzles then crank the engine. I may get fuel coming out but this should minimise the amount spraying over everything and if no fuel I have my culprit.
Wish me luck fingers crossed I wont incinerate myself!
firstly, get a circuit tester and make sure you\'ve got current at the fuel pump when turning the key on. A simple screwdriver-style one will cost only a couple of quid, and will be a good start.
If that doesn\'t show any charge, check the fuse box for starters, and then trace down the rest of the circuit. This will be an easier first check before disconnecting and unscrewing every damned thing...!!
Check the two grey plugs in the engine bay by the passenger side headlight, maybe they have some water in them?
Already checked for voltage on the plug that goes directly into the pump and thats got a charge of about 3.9volts which is what it is reading on the apexi as well.
I\'ll check the gray plugs before I start unplugging hoses but its been very very dry lately so thinking its not water but you never know and the car was running fine after its MOT on monday only to not start on wednesday.
Right during a break in the weather I managed to get outside and get pulling hoses off.
I took the main fuel feed hose off inside the engine bay and there was plenty of residual fuel left in the hose. I wrapped an empty crisp packet around it and used electrical tape to keep it on there and cranked the engine a fair few times. No fuel appeared to come out so I took off the crisp packet and tried again. Absolutely no fuel coming out so I\'m hoping I have found my culprit.
in the black diagnostics port in the engine bay bridge the FP and ground pins together....this will manually activate pump....you should here a gushing sound....also check fuel pump fuse and resister under brake servo...you can also direct live the pump to eliminate wiring issues...if your pump does not work direct from a battery then your pump is goosed...
Well I\'ve got current going to the pump but I have no idea which pins in the diagnostic port to ground together. Anyone got a pic so I can try it tonight or tomorrow?
There is a diagram on the underside of the cover, jump F/P and GND, then turn the ignition. Oh, pop the hoses back on first or you\'ll spray fuel everywhere if it\'s working.
Would be very interested to hear the outcome of this issue. I have the same problem at the moment. When I get a chance this weekend I\'ll try bridging the pins in the diagnostic block and see what happens. I\'mm 90% sure there is something up with the fuel pump as I can\'t hear it humming any longer.
I\'ve got a standard fuel pump if either of you need one, give me a shout
Cool, if I find out it\'s the pump 100% then I\'ll drop you a PM as I\'ll be interested in a replacement. Not had a chance this weekend, but will do a quick test over lunch and see what I can see. Cheers.
Ok, still having issues with the fuel pump running, to save typing up everything I\'ve tried have a quick read of my initial post here (http://www.rx7club.com/showthread.php?p=9428434#post9428434).
I\'m really not sure what to try next, something in the ignition wiring that I\'m missing? All the voltages on the fuel pump relay in the engine bay seem to be correct also.
Thoughts?