[guitaristanime]

I’ll deffo take some pictures tonight

 

[KRenshaw2000]

Hi all sorry not been on for a while. I purchased some noid lights to test the injector wiring and that’s all good as the noid lights flash. I did the bottle test and I’m not getting fuel squirting out the end of the injectors so that tells me that the injectors are blocked.

Also here are the pictures from under the dashboard.

 

[guitaristanime]

Weird that all 4 would be blocked.

Are you definitely 100% sure there's fuel in your tank (and your fuel gauge isn't lying...)

Also what's this:

I don't recognise it

EDIT: googled it and that MES relay is a central locking relay unit

 

[KRenshaw2000]

Weird that all 4 would be blocked.

Are you definitely 100% sure there's fuel in your tank (and your fuel gauge isn't lying...)

Also what's this:

View attachment 61190

I don't recognise it

EDIT: googled it and that MES relay is a central locking relay unit

I put 10 gallons of fresh fuel in it to make sure that it had fresh fuel in it and I know it had been stood for quite some time

 

[KRenshaw2000]

What else would cause the injectors to not spray if I’ve got power at the wiring loom.

 

[Zed.]

What else would cause the injectors to not spray if I’ve got power at the wiring loom.

fuel hoses connected the wrong way @ the engine / fuel-rail?

Rich.

 

[KRenshaw2000]

fuel hoses connected the wrong way @ the engine / fuel-rail?

Rich.

I do know that the pipe from the tank is fitted to the front of the fuel rail near the front of the engine and the return is fitted to the back of the fuel rail at the fuel pressure regulator.

 

[Martin Y]

I suppose the obvious way to eliminate the injectors would be to get them cleaned. Thought fifty quid to eliminate one hypothesis does seem a bit much if it turns out not to be the answer. Don't suppose you could borrow known good injectors from someone and test it with those?

I know I had a set of 1.8 injectors which would do the job but honestly can't remember if I still have 'em or sold them on. Will have a rummage...

 

[KRenshaw2000]

I suppose the obvious way to eliminate the injectors would be to get them cleaned. Thought fifty quid to eliminate one hypothesis does seem a bit much if it turns out not to be the answer. Don't suppose you could borrow known good injectors from someone and test it with those?

I know I had a set of 1.8 injectors which would do the job but honestly can't remember if I still have 'em or sold them on. Will have a rummage...

I will see if someone I know with a 1.6 has got any I could borrow in the mean time I’ll test for fuel pressure and if you do find any for 1.6 let me know and I’d be happy to pay you for them

 

[guitaristanime]

@KRenshaw2000 where are you based?

 

[KRenshaw2000]

@KRenshaw2000 where are you based?

Derby

 

[guitaristanime]

Derby

Ah way too far for me to come help then.

 

[KRenshaw2000]

Ah way too far for me to come help then.

Where you based at

 

[guitaristanime]

Where you based at

South Devon

 

[KRenshaw2000]

South Devon

Oh damn yeah that’s far away

 

[KRenshaw2000]

Hi guys, I’m going to be doing a fuel pressure test on my Mazda. I was wondering if it has low fuel pressure. What would cause this.

 

[Martin Y]

Hi guys, I’m going to be doing a fuel pressure test on my Mazda. I was wondering if it has low fuel pressure. What would cause this.

Typical stuff would be a clogged fuel filter or clogged strainer sock over the fuel pickup in the tank.

Could also be a weak electrical supply to the pump - failing relay or a poor connection somewhere - or maybe a failing pump itself, or a failed fuel pressure regulator. Don't know how rare those last ones are but not something I recall hearing about.

 

[KRenshaw2000]

Typical stuff would be a clogged fuel filter or clogged strainer sock over the fuel pickup in the tank.

Could also be a weak electrical supply to the pump - failing relay or a poor connection somewhere - or maybe a failing pump itself, or a failed fuel pressure regulator. Don't know how rare those last ones are but not something I recall hearing about.

Thanks for the information. I went to check the fuel pressure on it and it’s got good pressure because after I let the injectors dry out and rebuilt it it fired straight up so I’ve now got a running Mazda mx5