Problem with 525/whipple.
 

Took the boat out to test a set of props from BBlades.gas gauge said 1/4 tank.decided to go to marina to get gas and when i was getting on plane the engine that uses more fuel for some reason started to make a craking noise and wanted to shut down.i was on plane twice when this happened.idled to gas dock put in 15 gal per tank and gauge came upto over 1/2 tank and got on plane again and it did the samething.hummm.looked back at the blower and there is a black thingamijig.it has a vaccum line on it and a rod that goes into it with a lever like it adjust when running.I'll go take a pic of it and post it now.

Re: Problem with 525/whipple.
 

pics.Could it also have got something in the fuel filter from the fuel level being low.

Re: Problem with 525/whipple.
 

Ck and see if anything came loose ?.Is something choking the motor down or just a noise?

Re: Problem with 525/whipple.
 

I check to see but didn't find anything but a 1" hex head screw in the bilge.motor idles fine.Strip thats the black thing i was talking about.

Re: Problem with 525/whipple.
 

I believe its a bypass for when you let out of it???so the boost doesn't spike

Take a pick of the bolt? It might of fell on the installation?

explain better whats it doing??

Re: Problem with 525/whipple.
 

The bolt is just a s.s.hex head bolt like about dozen more on the blower.i went and looked again at both blowers to see if anything was missing from one and not another.couldn't find anything missing.i went back out to see if it did it again and it did. what it's doing is when i get to 3000 rpms it makes a clicking/popping noise and wants to kill the motor but dosn't.that lever/rod at idle doesn't move except when its in gear but other engine doesn't do anything.i have a small video of it moving in gear at idle.let me see if it will load.

Re: Problem with 525/whipple.
 

Couldn't get the video to load.Another thing i noticed was that the starboard side motor is running very rich with soot on the transom but the motor thats giving me problems has no soot at all on that side.Does this mean it might be running lean?Hope this isn't a internal problem.

Re: Problem with 525/whipple.
 

I would send out a call or post to Dustin at Whipple. He is the most knowledgeable on his blowers and I am sure he can help you find the culprit, hopefully before any damage is done.

RaY @ Raylar

Re: Problem with 525/whipple.
 

I would give tyler crockett a call. He is the man when it comes to the whipples.

Re: Problem with 525/whipple.
 

Does it make the noise in neutral when you rev it? Had a similiar problem on 500efi's after running one of them out of fuel. At about 2700 rpm a popping sound from one motor when under load. Could spin it to 5000 in neutral with no noise. Im no expert but fuel delivery could be the answer.

Re: Problem with 525/whipple.
 

It doesn't make the noise in neutral but i only took it up to 2000 rpms in neutral.It was about 2700-3000 rpms when the noise started under load.The fuel pressure never moved when this happens either.The things is i didn't run out of fuel unless trying to get on plane it ran out for a split second.

Re: Problem with 525/whipple.
 

the black thing is a air idle bypass it let some of the air bypass the blower and go stright to the motor when the motor is idleing so you get a better idle as long as it is hooked up you should be fine only works at idle .it sounds like your problem may be under a load you may want to check the fuel filter also check the belt make sure it is not jumping due to loose adjuster also check the dist cap make sure it is on good and not loose

Re: Problem with 525/whipple.
 

I would pull the plugs out of that motor and see what they look like :eek: If it did lean out it will show up there,Electrode gone.Ive seen them get into a little boost getting on plane.With you running those tall props it might of detonated if it ran out of gas. Dustin Whipple's calibration gives it extra fuel at this point.Mine sometimes has a puff of black smoke sometimes getting on plane.I can watch my boost gage getting on plane and I can make it get on plane only going to 0 inch's on the gage , but its easy to go into boost getting on plane.I never go above 2 lbs though.

Being it only does it under load may be electrical?Spark plus wires /clicking noise?

Does the computer have a safe mode that has to be reset?limp mode??

Again I am just guessing,

Rob

Re: Problem with 525/whipple.
 

Is it a crackling noise or more like a popping/muffled backfire? My Sonic did this once when the fuel switch was in the wrong position (180* opposite direction from fully turned on). This was a N/A 500EFI, but with the fuel switch set wrong, it was starved for fuel. Sounds like something is starving your fuel if so.

Re: Problem with 525/whipple.
 

I'm not sure about a rest but i'll check the install manual to see.i think i'll take it to the marina and plug the computer upto it to see if it throws anything and check the plugs to.i know it has knock sencer on it .

Re: Problem with 525/whipple.
 

That's my guess as well. Good luck Rich!!!

Re: Problem with 525/whipple.
 

Thanks Craig.I pulled 1 plug and took a pic of it .#7 and it was very wet but i can't read a plug unless it was talking to me. :D Is there a certain 1 i need to look at like 7 or 8 ?

Re: Problem with 525/whipple.
 

Pulled the fuel filter and had a little junk in it but clogged.Don't think it's that.

Re: Problem with 525/whipple.
 

Plus should not be wet.Change them ,but that doesn't look like the prob. Did you change the heat range ?

If the DDT doesn't find anything ,you might run a compression test. But I would think it wouldn't leaned out that quick ,. but it can.

did ya ck the ignition?

You prob want beable to get ahold of Dustin till after 2 your time .

Re: Problem with 525/whipple.
 

The plugs are the ones dustin sent with the kit b7... instead ofthe bpr6es.Talked to Tyler and he said do a comp. test too.checked all plug ins and coil and etc. and nothing is unplugged.

Re: Problem with 525/whipple.
 

Just got back from fixing and testing.We reset the iac and changed spark plugs.It fixed it.I guess it fauled 3 or 4 plugs.Tyler will be here to fix my problem SOON.

Re: Problem with 525/whipple.
 

I'm surprised it even ran with the plugs that fouled.

Here's a link to plug reading 101 with what they should look like.

http://www.maxracesoftware.com/spark_plugs.htm

Re: Problem with 525/whipple.
 

Tyler is the man!

Re: Problem with 525/whipple.
 

Is Tyler the one that did the programing on the ecu?

You said that motor was the one that was not blacking the transom and the other was .Can ya swap the computer to the other,might help?But it shouldn't though. What was the ticking sound?

If ya get him to tune it in the boat your prob going to need the bungs

Becarfull :drink:

Re: Problem with 525/whipple.
 

Are those your exhaust tips? I thought you wanted the O2 senser near the exhaust port in one runner. That is an easier location to install. Did Mark use that port on the dyno?

Re: Problem with 525/whipple.
 

Tyler i think help tune the ecu's for the 525's.I'm going to have him weld in the bungs for the o2 sensor in the #7.The ticking sound must have been the fauling of the plugs but i don't know for sure.swaping the computers would take sometime to do which i don't this week.boat has to get recleared this weekend and won't have it back until mid apr.

Re: Problem with 525/whipple.
 

Rich,

Glad to hear only minor problems. You will need to get use to them with a blower.

Are you using James's guy to weld in Fitting? What size fitting do you need? Why #7? I always thought #6 was the leanest cylinder in a big block Chevrolet.

Re: Problem with 525/whipple.
 

Maybe it was #6 i can't remember much this days you.I'll call him to make sure.I think it was a 1/2" bung.Might take it down to your guy and have him do them.James will be up here next week for the martinsville race.Linnie i have 2-4 tickets left.Jr. is going to win the race. :D

Re: Problem with 525/whipple.
 

Yea, come on Linnie, go to the race!!!! It was a blast last year. Looking forward to it again.

James

Re: Problem with 525/whipple.
 

He's scared. :D

Re: Problem with 525/whipple.
 

We used my headers and his tail pipes this time . Mark had just made them and wanted to test them on the dyno . Yes there my tail pipes and I tried to stay away from the water there.All the o2 sensors Ive seen have been in the collector or tail pipe . We also used the EGT in the headers and Mark had one in the tail pipe also.His new dyno soft wear is pretty cool.. For some reason this time at the dyno the temps were low. The probe in the tail read higher I guess because of 4 feeding it.We still stayed Conservative/fat on the AFR.

I sent the tail pipe to CMI for them to put is the a metric bung I think 18mm???Its pretty big I don't think it would fit like where you put the EGT's.

Rich glad it wasn't any thing internal,keep us posted how it runs :drink:

Rob

Re: Problem with 525/whipple.
 

you can see it a little

Re: Problem with 525/whipple.
 

Im scared??? After 10 years at Daytona for a solid week of party, I think not!!!!!

Are the tickets with you guys?

Re: Problem with 525/whipple.
 

Yes they are and we're in turns 1-2 up top.Come on Linnie i need someone to moniter my drinking well never mind. :D