Question about Yamaha Yzf750r Yzf750sp And Yzf1000r Thunderace Service And Repair Manual

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I have no spark on on my yzf1000 is it because i have no oil level relay connected to the wiring loom

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Electrical wiring

Posted on Apr 10, 2011


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Could be bad connection to injector or bad injector?

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Check oil level if ok there maybe a short in the wiring loom or a fault in the oil

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No spark at plug

it could be a number of things. First check your engine oil level. Turn the engine switch to on and give her a pull over. No spark, disconnect the low oil level sensor - (yellow wire) and give her a pull over again.
If you get spark, and did fill your oil, you have a bad sensor. If still no spark, try another plug. Otherwise it is a bad coil or a bad high tension wire or connection from the coil to ground

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Engine turns but car still wont start up

I'm not sure what your question or need is but I will surmise that you want to know what can cause a "Crank no start". There are several parts or systems that could cause this failure. With these newer electronically controlled vehicles, it is harder to diagnose without a reader or scan-tool. Items to check are: Fuel/gas level in tank, Oil level and age (is the oil change due?), oil sending unit, Fuel (filter, pump, fuse, relay, &related wiring), Distributor (Cap, Rotor, pick-up coil), Spark-plugs, Spark-plug Wires, Defective Fuel injectors, or defective PCM. I hope this helps. If you need more assistents please write back and I'll do my best.

Jan 05, 2014 | Cars & Trucks

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How to fit a 2nd reversing light to my Vauxhall astra

using the original wiring and a new live wire. this can be used on the tow wiring loom located under the boot cover at the bottom. and a relay. wire the the new light up and place the earth wire on a good earthing point.use a wire from the reversing wire and connect to the relay switching side of the relay and use the live wire from loom for tow wire. also place a fuse on this wire 10amp will be fine. if you are using the 2nd reversing lights for a caravan etc don't use this live wire use a new wire. most wiring looms have a wire on to loom for reversing light. so check that first. it can handle 2 new lights at a maximum of 10w which is adequate for the new lights. as you have not said what year astra it is both of these should work fine. there is also a main live in the pass side rear side compartment used for electrical extras cd player etc there will be a plug with nothing connected to it. it is ignition control 25amp rating. so a 10amp fuse will be fine on this line.

Jul 30, 2013 | Vauxhall Cars & Trucks

1 Answer

I have a eu2000i honda generator and will not start, for i am not getting any spark up to plug, it was running before I changed the oil, now I can't get no spark

Hi and welcome to Fixya. I am Kelly.

The key words here are I just changed the oil. The engine has an oil level sensor that will kill the spark if it does not sense that there is enough oil in the engine.

First... re-check the oil level.

2nd... Make sure that the 2 wires on the LOW Oil Lever Sensor assy are totally connected.

After re-verifying the oil level is correct, the LOW Oil Level Sensor is installed and properly connected.... Check for spark once again.

If you still do not have spark then:
Disconnect ONE wire from the LOW Oil Level Sensor and check for spark again. You should have spark.

If you do have spark remove the LOW oil sensor and clean it with fresh oil. If you have an oiler squirt it in the holes on the side of the LOW Oil Level Sensor

(The LOW Oil Level Sensor will be on the side of the crank case of the engine. Usually on opposite side of the engine as the Oil fill hole / dip stick.)

I think this will get you going again but if not just respond via comments and we will get back to you.

Thanks for using FixYa.


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1992 VW Polo 1.3L Coupe: warning light mystery

Bought a very reputable diy service manual for the vehicle, and that plus a bit of thought and nous gave me the cure: no intrinsic problem other than loose relay connections. Went round with the wiring diagrams as guide checking all electrical connections in tight and relays fuses etc all good. Switched on and no problem any more.

By the way, vehicle is 1992 VW Polo - not Fox (which in UK is a variant of the Polo)

Sep 06, 2008 | 1992 Volkswagen Fox

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Fuse box

Wiring relays and connections – all modelsRelays (typical)

1 Vacant
2 Intake manifold preheating relay (carburettor models) or fuel
pump relay (injection models)
3 Seat belt warning system relay
4 Gearshift indicator control unit
5 Air conditioner relay
6 Dual tone horn relay
7 Relay for foglights and rear foglight
8 Relief relay for X contact
10 Intermittent wash/wipe relay
11 Rear window wiper relay
12 Turn signal flasher or trailer towing warning relay
13 Seat belt warning system (interlock) or rear window, driving
lights and oil pressure warning relay
14 Window lift or seat belt warning system relay
15 Headlight washer relay
16 Control unit for idling speed increase
17 Fuse for rear foglight
18 Control unit for coolant shortage indicator
19 Thermo fuse for window lifters
20 Switch unit for heated driver’s seat
21 Switch unit for heated passenger’s seat
22 Switch unit for overrun cut-off
23 Vacant
24 Vacant
Relays are symbolised as a number in a black box
Not all relays are fitted to all models
A Multi-pin connector (blue) for dash panel loom
B Multi-pin connector (red) for dash panel loom
C Multi-pin connector (yellow) for engine compartment loom left
D Multi-pin connector (white) for engine compartment loom right
E Multi-pin connector (black) for rear wiring loom
G Single connector
H Multi-pin connector (brown) for air conditioner or wiring loom
K Multi-pin connector (transparent) for seat belt warning system
L Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (carburettor models) or
multi-pin connector (grey) for dual tone horn (injection models)
M Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (injection models)
N Single connector for separate fuse (manifold heater element)
P Single connector (terminal 30)
R Not in use
Fuse colours
Blue 5A
Green 30A
Red 10A
Yellow 20A

Jul 17, 2008 | 1987 Volkswagen Jetta

1 Answer

Mk2 1991 gti 8v wiring loom

You have blown up the ecu as a result of not having a good earth connection from the earth lead on the gearbox.
This is a very common problem (done it myself!)
Only solution is to get the ecu repaired or replaced.
You must change the oil and filter before trying to start the car again.

Jun 19, 2008 | 1991 Volkswagen GTI

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