HELP!

[Aussie John]

I hit deep standing water on M74 on Friday, the Griff then ran badly, water was as deep as the air filter so I think it may have goosed the MAF unit. The car used heaps of fuel, maybe 5 mpg on the way home, ok under big throttle but terrible on light throttle, barely running. Before changing things any thoughts guys?

[Polly Grigora]

Do you mean the engine could have sucked in water?

[QBee]

How far did you manage to travel getting home?

[Aussie John]

Drove about 200 miles in terrible weather, I have been in the garage for a few minutes and the foam on the filter is very wet feeling through the grille area.

[lee02]

The MAF went on a Griffith I owned years ago. The car run really rich. I took it to Rovercraft a local V8 specialist the technician checked the MAF with a multimeter and declared it toast. I changed it and all was right again.
Not sure what the numbers should be but information must be out there somewhere.
That’s the first thing I would check, if still not right a compression test will tell you if there is mechanical damage

Good luck

[blaze_away]

I would suggest that you clean and dry all the Ignition components before condemning anything.

clean and dry thoroughly as follows:

Take the distributor cap off and clean and dry thoroughly. Blow out with an airline if you have one.

Remove the rotor arm and clean and dry it. Blow out with an airline if you have one

Take off each plug HT lead from both the plug and cap and clean and dry them.

Remove the wires from the coil and ignition amp and clean and dry everything.

Once all that's done then try it again.

[Aussie John]

Replaced the MAF unit, cleaned all electrics and dried out the air filter, took it out for 5 miles, looks good, thanks for all the help guys, cheers, John.

[blaze_away]

Glad you are now sorted. I would keep your old MAF as it may be good as I would expect your problem was more to with wet electrics

[phillpot]

Aussie John said:

Replaced the MAF unit,

Did you have a spare, buy a 60 quid "Ebay" unit or find a good second hand one somewhere?

[Aussie John]

I bought a pile of bits from Joolz a while ago, all from running cars which he had converted to new ecu's, luckily a good MAF was in the parts, cheers, John. PS I think the MAF was nbg as I could remove the wiring with no effect on the bad running.

Edited by Aussie John on Sunday 2nd October 21:32

[Teamred]

I bought one from Rimmer Bros recently. Aftermarket, but they are a reputable company. Done about 1000 miles with it now. So far, so good.

[ESDavey]

you can run with the MAF / AFM disconnected. Makes the Griffith sound like a NASCAR but it will run ok & so you can isolate that part if needed

[Quinny]

Aussie John said:

Replaced the MAF unit, cleaned all electrics and dried out the air filter, took it out for 5 miles, looks good, thanks for all the help guys, cheers, John.

It may be made of fibreglass but it’s not a boat John