My Lightning has a clatter around 3250RPM's when cold that sounds something like collapsed lifters sound in a more primitive style engine. The sound pretty much goes away when it reachs normal operating temp. The Ford dealer mechanic said it is carbon on the pistons hitting the heads that softens when the engine heats up. Anyone else have this problem? He suggests running a tank of regular gas through it occasionaly but I doubt I'll do that because the manual(and Superchips) say premium only. Any other thoughts or suggestions from the worlds best online board mechanics?

------------------
Red 99.5 Lightning,
#0975,
Born 5/6/99...Adopted 5/27/99
Chipped w/SuperChip Flipchip chip,
PSP Filter(track untested),
Water Wetter,
Mobil 1,
Foglamp Covers,
13.573@101.08

 

Hey 4D, Sal here. I'd find another mechanic. Carbon deposits that thick on a year old truck? I don't think so. The noise is piston slap. It is caused by poor wrist pin location in some cyilnders. Combined with forged pistons that expand a bit aftert hey heat up, the noise is caused by the piston "****ing" twice in the bottom of the bore on every downstroke. Ford will replace the motor with a line motor (complete from pan to blower). The new motor has revised pistons that eliminate this problem. I put a motor in mine at 2200 miles I spent a good amount of time working with the engineers to figure this out. It's been a common problem in all Triton truck motors since 97. My new motor doesn't make the noise, although I have noticed that it does puff some smoke on startup :-/

------------------
SAL
13.35@103mph
All stock with PSP 99 Lightning Chip and Filter Kit

Power Surge Performance--- Your SOURCE for SVT Lightning EFI Tuning and Performance!! http://members.aol.com/NLOCsvt/svt.html

 

Ok, I assume there is some kind of automatic censoring on this board? In my above post, a word had part of it blocked out when I posted it. The word was c*o*c*k*i*n*g. (let's see if that works)

------------------
SAL
13.35@103mph
All stock with PSP 99 Lightning Chip and Filter Kit

Power Surge Performance--- Your SOURCE for SVT Lightning EFI Tuning and Performance!! http://members.aol.com/NLOCsvt/svt.html

 

Sal,

It's great to have you back on board. I for one missed your concise and informative insight.

Welcome Back!!!!

------------------
Joel.......
99.5 White Lightning,
SVT # 0052



[This message has been edited by JoeLightning (edited 01-13-2000).]

 

I dont think that there are any increased deposits from lower octane gas. I think what the mechanic was getting at (However wrong it may be on a forced induction motor) is that the lower octane fuel burns easier and hotter. I guess that he figures the additional heat will clean the deposits.

 

Oops, double post

[This message has been edited by Typhoon (edited 01-13-2000).]

 

Triple post even. Man when this thing gets locked up it goes wild.

[This message has been edited by Typhoon (edited 01-13-2000).]

 

Please, no-one hit on me, but try your chip in the normal mode. I run both the PSP chip and the Superchip and have the same noise at the same rpm. In my case, it is the crappy winter gas we have in metro Atlanta as far as I can tell.
If that doesn't change things, then Sal may be right about the ****ing rods.
As to the carbon buildup, I would say that is absolute rot and the tech was fishing.
Bill

------------------
Bill Murray
99 Lightning #247
PSP Chip & Filter
Spare Superchip
Bassani full system TBI
Oxford White w/normal options.
98 Lincoln Continental Stock
56 F100 Big Window 272 w/TBird intake headers Fordomatic
56 F100 small window w/built 300" I6
69 Belair 390/427/400 Built
69 C10 Panel Stock
Soon: 92 Town Car
Tamiya 1/10 Lightning
Lightning & Thunder Rag Doll Cats.
E-mail MOSTOYSINC@AOL.com
htuken@BellSouth.net
HobbyTown1@WebTV.net
Kennesaw (Atlanta) Ga.

 

Just realized I got ***** on c*o*c*k*i*n*g
too. I really hate to do this, but how about ****.
Really, this is just a test, I don't use those words on this board.
Bill

 

Yep, we are well and truly censored right from the get go.

Let's see if it works in other languages?

Merde, skit, hijo de puta, kram, cojones and etc.

Please, this is a joke, and is a mix of Spanish and Swedish equivelants to some common words I have seen on the board.

Steve has had a bad hair week, maybe we can give him a laugh.

Bill


------------------
Bill Murray
99 Lightning #247
PSP Chip & Filter
Spare Superchip
Bassani full system TBI
Oxford White w/normal options.
98 Lincoln Continental Stock
56 F100 Big Window 272 w/TBird intake headers Fordomatic
56 F100 small window w/built 300" I6
69 Belair 390/427/400 Built
69 C10 Panel Stock
Soon: 92 Town Car
Tamiya 1/10 Lightning
Lightning & Thunder Rag Doll Cats.
E-mail MOSTOYSINC@AOL.com
htuken@BellSouth.net
HobbyTown1@WebTV.net
Kennesaw (Atlanta) Ga.

 

Bill Murray...

Are you gonna hang on to both of those chips ? Or chose one and possibly sell one? I asked first. Grin

Jeff C.

------------------
Red 99 Lightning (Totaled)
Black 99 Lightning
White 88 SVO Merkur Xr4ti
Sand Gold 88 Xr4ti
Silver 95 SHO

 

It's been doing it since around 2,000 miles(8,000 now) except when it's at the dealer . This is the forth time I've had it in and he barely heard it this time. I lean toward the piston slap diagnoses more except pulling the battery and forcing a relearn quiets it down for awhile. It would be unusal for one of my vehicles to have carbon build up anyway , but it's not something I would argue with a Ford mechanic about. I'm gettin' real frustrated about it anyway. I always thought piston slap could be heard at startup for 10-15 secs? There is no noise at startup or if you just rev it...never. The only way it will do it is in gear at 3200 or so cold and it's very sensitive to throttle position. A little more it quiets, a little less and it goes away. I would probably never even know about it except leaving work one morning when the RPM's peaked at around 3k it kinda hung there for a couple seconds before shifting and it made about 3 clatters and I thought to myself *censor* (beat your software to it Steve ) and I pulled it back down in second to hear it clatter its little heart out. So I'm still at square one. This guy was the largest dealer in southeast VA's(maybe all of VA) best 5.4 mechanic but he made the diagnosis before hearing it going on only what I told him. BTW, he has already changed one Lightning engine for PS but that one was noisy on startup.

------------------
Red 99.5 Lightning,
#0975,
Born 5/6/99...Adopted 5/27/99
Chipped w/SuperChip Flipchip chip,
PSP Filter(track untested),
Water Wetter,
Mobil 1,
Foglamp Covers,
13.573@101.08

 

BTW, Good to see ya made it back Sal. Installed your filter, first rate craftsmanship. Is the phone number on your PSP page current? I'd like to ask you some questions on the pistonslap thing on my dime if I could.

------------------
Red 99.5 Lightning,
#0975,
Born 5/6/99...Adopted 5/27/99
Chipped w/SuperChip Flipchip chip,
PSP Filter(track untested),
Water Wetter,
Mobil 1,
Foglamp Covers,
13.573@101.08

 

I was wondering what that word was suppose to be

 

Sal,

Does high octane gas cause carbon to build up more quickly than regular octane?

------------------
The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Ford Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
www.mindspring.com/~acbradley/index.html